New Waitlist Feature - Opt In's

Right now, if a slot becomes available in a class (up to one hour before the class starts), Gymflow will automatically fill that slot with a user from the waitlist.

Sometimes a user who is on the waitlist is automatically booked into a class and doesn't realise; they miss the automated email. This can cause them to not attend because they don't realise and they lose their credit. This also means that another user who is more keen to attend the class misses out.

The suggestion is to not automatically add users on the waitlist to the class, but to instead send a message to all users on the waitlist inviting them to book the available slot, on a first come, first served basis.

The sequence of events could go something like:

1. Someone cancels, freeing up a slot in the class

2. All users receive a notification that a slot has become available

3. The first user to accept is given the slot and the class is full again