Using punches for specific events

Hi there! Currently, event categories can be assigned to packages, so if an event is in the event category, punches can be used to pay for event registration. However, there may be an event category where the punches can be used for some events but not others. 

For example, we have room in our current session for Thursday Cardio class. Typically, event sign ups are for the entire session, but with the space, we have opened it for drop ins. We have a Drop Ins Package, and we would like to allow punches for only this particular class (along with the other event categories that it is already assigned to). However, other classes in the Cardio event category like Winter session Cardio classes should not allow for punches since they are not drop ins. 

We would like package settings to include choosing event sessions and/or specific events as options.