Allow room calendar to be book only specific number of people

Hi TechNet Expert,

We need to create a meeting room calendar that could be booked by specified numbers of people. for instance, if the meeting room is able to host only 10 person, then that meeting room calendar can only be booked by up to 10 persons. the 11th person that is going to book will be declined with the message the meeting room is fully book.

Kindly suggest the best way of doing this.

thanks.

Regards,

Henry