How Notifications Appear
Open the notification panel from the app chrome to load the latest available notifications. Use an item control to mark a notification read or dismiss it; use Mark all as read for the current list.
Collaboration invitations
Section titled “Collaboration invitations”When an invitation opens the collaboration-invite modal, review the pending invite and choose Accept to submit it. The button switches to Accepting… while the request is in progress, then the invite is removed on success or restored if the request fails.