It would be amazing to track these numbers.
1- Waitlist # vs conversion of these waitlist people
2- Effective gap filling. example how many hours avilable at the start of the day vs how many were filled by the end of the day. reason for this is if the front of house is very good at converting appointments for the now it utilises the most pressing time and frees up future times. It also helps with clients finding other options at other salons.
3- Also the revenue recovered from filling these most urgent time slots..