Groups
Search a booking, then manage its participants and split the payment between them: each participant gets their own installment and payment link. The leader of the group is the one you designate, or the first one registered.
Waitlist
When a date is full, visitors can join its waitlist (VEF Pro Waitlist block, module or widget). When a place is freed, the people waiting are told in the order they registered, taking into account how many persons each entry needs. Look up the waitlist of a full slot here by its number.