I may be missing something obvious here but I can't change the business unit on the users details form.
Go to Administration - Users - select a user. Under 'Organization Information' it shows the root business unit with a lock icon. If I hover over the value the magnifying glass appears as if I can search and select another value, but it's disabled.
At the top of the screen it says that this user is managed by Office 365 but in the Office 365 Portal I can't change his business unit.
If I go to Customise the system and check the user information form the field is indeed locked, with a little info icon informing me that it's locked by the system.
What am I missing? I don't remember having this problem with Dynamics 2011 and without the Office 365 connection.