Plugin customization "Bookly - Appointment Booking and Scheduling Software System"

Hello, we are looking for someone who has already worked with this plugin and who knows him perfectly to make a customization (System installed on a multisite wordpress) : We want to install a subscription system that works this way : - Users being able to book a specified amount of bookings for a specified time (for example: 10 booking on the span of 1 month, 12 booking in 2 months etc.) - Creation of subscription with limitation of X bookings on X time during X time Example: 2 Reservations per week for 3 months (3 variables) These subscriptions must also be specific for certain services. It would be necessary that from the administration we have the possibility of assigning to each subscription a list of the services with which the subscription is associated Thus, customers with a subscription and who respect the conditions, will pass the step of payment and their reservation will be immediately admitted. If the customer does not have a subscription he will go through the traditional payment step. If the customer has exhausted his subscription, so that he reaches the reservation limit for his subscription, it will be necessary to indicate an error message with the reason. It should also be provided that the user can see his remaining credit on his dashboard "Bookly Customer Cabinet (Add-on)" Attention, note that this system must work with or without synchronization with Woocommerce and must adapt to other addons Bookly, examples: "Bookly Recurring Appointments (Add-on)", "Bookly Multiply Appointments (Add-on) "," Bookly Chain Appointments (Add-on) "... It is sure that you will have to modify the original files of Bookly, so it will be necessary to remember to note all the additions in comments "/ * example * /" so that we do not encounter any problems with the next updates ... Thank you very much ! Hoping to find a person who really knows this plugin to answer all our requests!