Batch-Add Extra Dates

What specific challenge or problem does this idea solve?

It is cumbersome to add a lot of extra dates which we need to do for things like dress rehearsals & shows at the end of the year.

How should this work?

I would say one of two ways:

1. Batch add by class, entering a list of dates/times.
2. Batch add by date/time and select from class list

Who will benefit (Admins, Staff, Students)?

Admin / Staff

How will this change impact your daily tasks or overall experience?

I need things to make administration SO much quicker!