Apart from user roles, there is always
- locking layers in layer combinations,
- 'working' layer combinations for specific modeling/drafting/annotation/coordination tasks (which the model manager can modify on the fly), and
- locking elements (including section markers, in your example): when hovering with the cursor the element will display a 'Locked by Whoever' sign —it can still be unlocked by anybody, but well-meaning people first ask Whoever.
That package doesn't prevent criminal action, but does reduce screwups.