After selecting a job on the schedule calendar, you might notice that the Edit assignments task allows the addition of more volunteers to a job that is already booked (at capacity). Conversely, it is not possible to overbook a job using the Assign volunteers task on the job schedule calendar.
We are currently evaluating this issue for a fix in a future service pack.
Steps to Duplicate
1) Go to Job search > Select a job that has occurrences > Click the down chevron next to an occurrence > Schedule 2) Select the job on the Calendar and assign volunteers until it is full (if it isn't already showing as booked). 3) Select the job on the Calendar and click Edit assignments 4) Mark the checkbox next to more volunteers > Click Assign. 5) Notice that more volunteers have been added to the already booked job.