Planning unit setup is disabled in User Preferences
Symptoms
The system level preferences have been set to choose from any of the three planning units available.
With these settings in place, user is still not able to choose its own units as personal preference. Some units have been disabled under personal preferences and cannot be selected.
Reason
Planning units are disabled at workgroup level.
Resolution
Check user’s workgroup for the available planning units, and its parent workgroups for the “Include Children” flag, and make sure that none of the unit options are disabled.