Schedule volunteers from the Schedule tab of their records to have opening settings enforced
If you use openings on your assignments to show when volunteers are needed, System Operators need to be careful to schedule by clicking the "Fill" link instead of the "Schedule a volunteer" box when they schedule volunteers from the Schedule tab of the Assignment or from the Schedule itself. Otherwise, volunteers can be placed on the schedule without filling an opening. If your organization has trouble with volunteers being scheduled without filling openings, you can reduce the chances of this happening by taking these steps:
1. Setup your assignments to allow scheduling for "Openings only" on the assignment's Rules tab.
2. Ask System Operators to schedule volunteers by using the Schedule tab of the volunteer's record instead of from the Schedule tab of the assignment or the Schedule page itself.