Maximum of one measurement appointment per 90 days per member

As a coach, I want to be able to set it so that a member can book a maximum of one measurement appointment per personal 90-day period. However, appointments may be available for other members every month. The restriction must apply per member and prevent two measurement appointments from being scheduled too close together. This concerns a rolling interval from the previous relevant appointment, independent of a calendar month or the refreshing of credits. It must be clear from which appointment date the waiting time is calculated.