Access settings not applied correctly?
When recording the tutorial I encountered a strange behaviour.
I shared the Timeline via the share button in the more options menu, created a new group in the dialog and defined the access settings and set it to "contribute". I switched the account, accepted an invitation and tried to access the shared Timeline. But instead of "contribute", the Timeline was only accessible in "view" mode.
When I returned to the account which shared the Timeline, the settings in the Timeline Details looked like this:
After setting the the access right to "contribute" in the Timeline Details, it worked as expected.
It's difficult to reproduce, but seemed to be related to the sharing dialog.