diff --git a/src/models/Grant.js b/src/models/Grant.js
index caf05edb..36d7e19d 100644
--- a/src/models/Grant.js
+++ b/src/models/Grant.js
@@ -34,70 +34,67 @@ export default class Grant extends Model {
 }
 
 function GrantsFilters({ filter }) {
-    const setFilterFields = filter.setFilter
-    const [year, setYear] = useState(0)
-    const [status, setStatus] = useState('all')
-    const currentYear = new Date().getFullYear()
-    const startYear = 2007
-    const years = Array.from({ length: currentYear - startYear + 1 }, (_, i) => currentYear - i)
-    
+    const setFilterFields = filter.setFilter;
+    const [selectedOption, setSelectedOption] = useState('all');
+    const currentYear = new Date().getFullYear();
+    const startYear = 2007;
+    const years = Array.from({ length: currentYear - startYear + 1 }, (_, i) => currentYear - i);
+
+    const options = [
+        { value: 'all', label: 'Tutti' },
+        { value: 'active', label: 'Attivi' },
+        { value: 'inactive', label: 'Non attivi' },
+        ...years.map(year => ({ value: year.toString(), label: year.toString() })),
+    ];
+
     return (
-        <>
-            <select
-                className="mx-1 form-control"
-                style={{ width: '10%' }}
-                placeholder='Seleziona anno'
-                value={year || ""}
-                onChange={evt => {
-                    const year = parseInt(evt.target.value);
-                    setYear(year);
-                    if (year) {
-                        setFilterFields(prev => ({
-                            ...prev,
+        <select
+            className="mx-1 form-control"
+            style={{ width: '10%' }}
+            value={selectedOption}
+            onChange={evt => {
+                const value = evt.target.value;
+                setSelectedOption(value);
+
+                if (value === 'all') {
+                    setFilterFields(prev => {
+                        const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
+                        return rest;
+                    });
+                } else if (value === 'active') {
+                    setFilterFields(prev => {
+                        const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
+                        return {
+                            ...rest,
+                            endDate__gte_or_null: 'today',
+                        };
+                    });
+                } else if (value === 'inactive') {
+                    setFilterFields(prev => {
+                        const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
+                        return {
+                            ...rest,
+                            endDate__lt: 'today',
+                        };
+                    });
+                } else {
+                    const year = parseInt(value);
+                    setFilterFields(prev => {
+                        const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
+                        return {
+                            ...rest,
                             startDate__lt_or_null: `${year + 1}-01-01`,
                             endDate__gte_or_null: `${year}-01-01`,
-                        }));
-                    } else {
-                        setFilterFields(prev => {
-                            const { startDate__lt_or_null, endDate__gte_or_null, ...rest } = prev;
-                            return rest;
-                        });
-                    }
-                }}
-            >
-                <option value="">Tutti gli anni</option>
-                {years.map(y => <option key={y} value={y}>{y}</option>)}
-            </select>
-            <select
-                className="mx-1 form-control"
-                style={{ width: '10%' }}
-                value={status}
-                onChange={evt => {
-                    const status = evt.target.value;
-                    setStatus(status);
-                    setFilterFields(prev => {
-                        const { endDate__gte_or_null, endDate__lt, ...rest } = prev;
-
-                        if (status === 'active') {
-                            return {
-                                ...rest,
-                                endDate__gte_or_null: 'today',
-                            };
-                        } else if (status === 'inactive') {
-                            return {
-                                ...rest,
-                                endDate__lt: 'today',
-                            };
-                        } else {
-                            return rest;
-                        }
+                        };
                     });
-                }}
-            >
-                <option value="all">Tutti</option>
-                <option value="active">Attivi</option>
-                <option value="inactive">Non attivi</option>
-            </select>
-        </>
+                }
+            }}
+        >
+            {options.map(option => (
+                <option key={option.value} value={option.value}>
+                    {option.label}
+                </option>
+            ))}
+        </select>
     );
 }
\ No newline at end of file
diff --git a/src/models/Group.js b/src/models/Group.js
index ed65b386..38badafa 100644
--- a/src/models/Group.js
+++ b/src/models/Group.js
@@ -29,70 +29,67 @@ export default class Group extends Model {
 }
 
 function GroupsFilters({ filter }) {
-    const setFilterFields = filter.setFilter
-    const [year, setYear] = useState(0)
-    const [status, setStatus] = useState('all')
-    const currentYear = new Date().getFullYear()
-    const startYear = 2007
-    const years = Array.from({ length: currentYear - startYear + 1 }, (_, i) => currentYear - i)
-    
+    const setFilterFields = filter.setFilter;
+    const [selectedOption, setSelectedOption] = useState('all');
+    const currentYear = new Date().getFullYear();
+    const startYear = 2018;
+    const years = Array.from({ length: currentYear - startYear + 1 }, (_, i) => currentYear - i);
+
+    const options = [
+        { value: 'all', label: 'Tutti' },
+        { value: 'active', label: 'Attivi' },
+        { value: 'inactive', label: 'Non attivi' },
+        ...years.map(year => ({ value: year.toString(), label: year.toString() })),
+    ];
+
     return (
-        <>
-            <select
-                className="mx-1 form-control"
-                style={{ width: '10%' }}
-                placeholder='Seleziona anno'
-                value={year || ""}
-                onChange={evt => {
-                    const year = parseInt(evt.target.value);
-                    setYear(year);
-                    if (year) {
-                        setFilterFields(prev => ({
-                            ...prev,
+        <select
+            className="mx-1 form-control"
+            style={{ width: '10%' }}
+            value={selectedOption}
+            onChange={evt => {
+                const value = evt.target.value;
+                setSelectedOption(value);
+
+                if (value === 'all') {
+                    setFilterFields(prev => {
+                        const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
+                        return rest;
+                    });
+                } else if (value === 'active') {
+                    setFilterFields(prev => {
+                        const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
+                        return {
+                            ...rest,
+                            endDate__gte_or_null: 'today',
+                        };
+                    });
+                } else if (value === 'inactive') {
+                    setFilterFields(prev => {
+                        const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
+                        return {
+                            ...rest,
+                            endDate__lt: 'today',
+                        };
+                    });
+                } else {
+                    const year = parseInt(value);
+                    setFilterFields(prev => {
+                        const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
+                        return {
+                            ...rest,
                             startDate__lt_or_null: `${year + 1}-01-01`,
                             endDate__gte_or_null: `${year}-01-01`,
-                        }));
-                    } else {
-                        setFilterFields(prev => {
-                            const { startDate__lt_or_null, endDate__gte_or_null, ...rest } = prev;
-                            return rest;
-                        });
-                    }
-                }}
-            >
-                <option value="">Tutti gli anni</option>
-                {years.map(y => <option key={y} value={y}>{y}</option>)}
-            </select>
-            <select
-                className="mx-1 form-control"
-                style={{ width: '10%' }}
-                value={status}
-                onChange={evt => {
-                    const status = evt.target.value;
-                    setStatus(status);
-                    setFilterFields(prev => {
-                        const { endDate__gte_or_null, endDate__lt, ...rest } = prev;
-
-                        if (status === 'active') {
-                            return {
-                                ...rest,
-                                endDate__gte_or_null: 'today',
-                            };
-                        } else if (status === 'inactive') {
-                            return {
-                                ...rest,
-                                endDate__lt: 'today',
-                            };
-                        } else {
-                            return rest;
-                        }
+                        };
                     });
-                }}
-            >
-                <option value="all">Tutti</option>
-                <option value="active">Attivi</option>
-                <option value="inactive">Non attivi</option>
-            </select>
-        </>
+                }
+            }}
+        >
+            {options.map(option => (
+                <option key={option.value} value={option.value}>
+                    {option.label}
+                </option>
+            ))}
+        </select>
     );
 }
\ No newline at end of file
diff --git a/src/models/Staff.js b/src/models/Staff.js
index ae61265b..41031763 100644
--- a/src/models/Staff.js
+++ b/src/models/Staff.js
@@ -33,70 +33,69 @@ export default class Staff extends Model {
 
 function StaffsFilters({ filter }) {
     const setFilterFields = filter.setFilter
-    const [year, setYear] = useState(0)
-    const [status, setStatus] = useState('all')
+    const [selectedOption, setSelectedOption] = useState('all');
     const [qualification, setQualification] = useState('')
     const currentYear = new Date().getFullYear()
-    const startYear = 2007
+    const startYear = 2011
     const years = Array.from({ length: currentYear - startYear + 1 }, (_, i) => currentYear - i)
     const qualificationOptions = ['PO', 'PA', 'RTDb', 'RTDa', 'RIC', 'Assegnista', 'Dottorando', 'PTA', 'Professore Emerito', 'Collaboratore', 'Docente Esterno', 'Dottorando Esterno', 'Personale in quiescenza', 'ex Docente']
     
+    const options = [
+        { value: 'all', label: 'Tutti' },
+        { value: 'active', label: 'Attivi' },
+        { value: 'inactive', label: 'Non attivi' },
+        ...years.map(year => ({ value: year.toString(), label: year.toString() })),
+    ];
+
     return (
         <>
             <select
                 className="mx-1 form-control"
                 style={{ width: '10%' }}
-                placeholder='Seleziona anno'
-                value={year || ""}
+                value={selectedOption}
                 onChange={evt => {
-                    const year = parseInt(evt.target.value);
-                    setYear(year);
-                    if (year) {
-                        setFilterFields(prev => ({
-                            ...prev,
-                            startDate__lt_or_null: `${year + 1}-01-01`,
-                            endDate__gte_or_null: `${year}-01-01`,
-                        }));
-                    } else {
+                    const value = evt.target.value;
+                    setSelectedOption(value);
+
+                    if (value === 'all') {
                         setFilterFields(prev => {
-                            const { startDate__lt_or_null, endDate__gte_or_null, ...rest } = prev;
+                            const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
                             return rest;
                         });
-                    }
-                }}
-            >
-                <option value="">Tutti gli anni</option>
-                {years.map(y => <option key={y} value={y}>{y}</option>)}
-            </select>
-            <select
-                className="mx-1 form-control"
-                style={{ width: '10%' }}
-                value={status}
-                onChange={evt => {
-                    const status = evt.target.value;
-                    setStatus(status);
-                    setFilterFields(prev => {
-                        const { endDate__gte_or_null, endDate__lt, ...rest } = prev;
-
-                        if (status === 'active') {
+                    } else if (value === 'active') {
+                        setFilterFields(prev => {
+                            const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
                             return {
                                 ...rest,
                                 endDate__gte_or_null: 'today',
                             };
-                        } else if (status === 'inactive') {
+                        });
+                    } else if (value === 'inactive') {
+                        setFilterFields(prev => {
+                            const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
                             return {
                                 ...rest,
                                 endDate__lt: 'today',
                             };
-                        } else {
-                            return rest;
-                        }
-                    });
+                        });
+                    } else {
+                        const year = parseInt(value);
+                        setFilterFields(prev => {
+                            const { startDate__lt_or_null, endDate__gte_or_null, endDate__lt, ...rest } = prev;
+                            return {
+                                ...rest,
+                                startDate__lt_or_null: `${year + 1}-01-01`,
+                                endDate__gte_or_null: `${year}-01-01`,
+                            };
+                        });
+                    }
                 }}
             >
-                <option value="all">Tutti</option>
-                <option value="active">Attivi</option>
-                <option value="inactive">Non attivi</option>
+                {options.map(option => (
+                    <option key={option.value} value={option.value}>
+                        {option.label}
+                    </option>
+                ))}
             </select>
             <select
                 className="mx-1 form-control"
diff --git a/src/models/Visit.js b/src/models/Visit.js
index 2110fd4c..dbd01d09 100644
--- a/src/models/Visit.js
+++ b/src/models/Visit.js
@@ -41,7 +41,7 @@ function VisitsFilters({filter}) {
     const setFilterFields = filter.setFilter
     const [year, setYear] = useState(0)
     const currentYear = new Date().getFullYear()
-    const startYear = 2013
+    const startYear = 2021
     const years = Array.from({ length: currentYear - startYear + 1 }, (_, i) => currentYear - i)
 
     return <>