Deactivating a user means that this user:
- can no longer connect to your Teambook account
- is no longer member of any Planner Board (future bookings are deleted - past bookings are still computed in the project budget)
To deactivate a user, go to Team, find the user you would like to deactivate and click on the icon.
To reactivate a user, go to Team > Manage > Deactivated Users, select the user you want to reactivate and click Reactivate. The user is again in the list of active users and can be defined again as member of a Planner Board.