Delete customer data and old entrys/Appointments in a Bookings calendar

Hi

is it possible to automatically delete customer data and any associated appointments from the past (e.g. > 90 days)?

Are there any hidden settings via Powershell?

So far I have not found anything about it.

Or there is the possibility to delete the customers from a calendar that is no longer used for the time being. The booking calendar may be reactivated with a new "service" in the future.