It is not possible to book a meeting without providing staff ID via API

Good morning,

We need to schedule meetings based on the availability of two users. It is nor important which user, but it is always one of them who will responsible. If both are on meetings, then there should be no available slot.

Via interface I fetch the availability and can book regardless of which specific staff is doing the meeting.

However, via API I am forced to provide a staff, group or resource id. Which I do not want to, I just want to set a meeting for a service, and which staff is doing is not important. That is the case for both endpoints, fetching availability or creating a booking.

Is there any plan to do that possible? Why am I required to provide the staff if in the api, when I already set in the service which users are attached to that service.

Best regards,
Eduardo