Resource restriction

Hi

First: your plugin is great. We are very interested on it.

Our client has a makeup salon and the booking system that is suitable for her has a restriction with the positions where the services are developed. For example, there are 4 employees who can give a massage but only 2 massage beds. It is not possible for the same time that the 4 employees are giving a massage service. Is there any possibility of establishing this restriction?

Thanks in advance