Restrict number of sessions a parent can book in a block#114

I want a way of restricting the amount of day passes a parent can book? e.g if I have 4 dates but only want parents to book a maximum of 2 days?

Hi. Can I just ask if it is possible to limit the number of sessions a buyer can choose? I have 4 sessions available but want them to only book a maximum of 2.

Best Wishes,

Educraft Limited