For scheduling classes, Martial Class supports the concept of Venues, Rooms, Classes, and Class Times.
Venues A Venue is a location where classes can be held. Typically it's a building, a school or a gym.
A Venue has Rooms in which classes are held. See Creating a New Venue.
Rooms There can be multiple Rooms per Venue, such as Main Dojo, Kids Room, Private Lesson Room, etc. See Creating a New Venue.
Classes
A Class in Martial Class refers to a particular category of class, such as kids, ladies, self-defence, stretching, mixed, etc.
There can be multiple Classes at any one venue, but typically only one per room (although you can schedule more than one per room). See Adding/Changing Class Times.