[Cases] New cases subfeature privileges (#4694)

(cherry picked from commit 16a205f)

docs/en/observability/grant-cases-access.asciidoc

@@ -21,7 +21,7 @@ a|
 ====
 Roles without `All` *{connectors-feature}* feature privileges cannot create, add, delete, or modify case connectors.
 
-By default, `All` for the *Cases* feature includes authority to delete cases, delete alerts and comments from cases, and edit case settings unless you customize the sub-feature privileges.
+By default, `All` for the *Cases* feature includes authority to delete cases, delete alerts and comments from cases, edit case settings, add case comments and attachments, and re-open cases unless you customize the sub-feature privileges.
 ====
 
 | Give assignee access to cases
@@ -33,7 +33,7 @@ least once, which creates a user profile.
 | Give view-only access for cases
 a| `Read` for the *Cases* feature under *{observability}*.
 
-NOTE: By default, `Read` for the *Cases* feature does not include authority to delete cases or delete alerts and comments from cases. You also cannot view or edit case settings. You can enable these actions by customizing the sub-feature privileges.
+NOTE: You can customize sub-feature privileges for deleting cases, deleting alerts and comments from cases, editing case settings, adding case comments and attachements, and re-opening cases.
 
 | Give access to add alerts to cases
 a|