SemesterProcess Date Range "aka Semester" should be unique
Trello Card: https://trello.com/c/496wthGl/182-semesterprocess-date-range-aka-semester-should-be-unique
Not yet added volunteers can be added to an existing SemesterProcess
Trello Card: https://trello.com/c/496wthGl/182-semesterprocess-date-range-aka-semester-should-be-unique
Not yet added volunteers can be added to an existing SemesterProcess