Shared location capacity for PT and free training

As a coach, I want to be able to set a single shared capacity for a location or training room used by various activities. For example: in a room with two spots, two members can train freely, or one PT session and one member can train freely. A booking must occupy the correct number of spots, a cancellation must release those spots, and both booking directions must check the same capacity. Members do not need to see private details of other appointments in this process.