Configure other than default account

[saebel6661]

I have added multiple accounts/mailboxes to my outlook. Taskboard is showing the tasks from my personal mailbox, which of course ist the default account in outlook.
I would like to use taskboard with my team mailbox, but I haven't managed to configure this. I guess that line 15 in the app.js file is the key:
var outlookNS = outlookApp.GetNameSpace("MAPI")
Google tells me that this NameSpace will only connect to the default mailbox. Can anyone tell me how to use the tasks from a non-default mailbox/account?