Cut Off Dates for ILT

Cut Off Dates for ILT

Could it be possible to add a field that creates a cut off date for enrollment into an ILT?
Example: If I list a class date as 3/1 and then enter a cut off date of 5 days prior, enrollment then locks on 2/24. For Instructors that need to prep materials or issue pre-work this provides a concrete number of participants to prep for.