You can add new classes through Classes → Add New Class in the WordPress Administration Panel.
Classes contain most of the same options as standard posts. You can read about these in the Add New Post chapter. Additionally, they contain post options specific to classes.
Additional Class Options
Class Options are found below the editor on the Edit Class page. If the Class Options are not visible, make sure they are checked inside the Screen Options area at the top.
If you are adding a new trainer, make sure you have saved the post before editing trainer options. Otherwise, the trainer options will not be visible.
Select the trainer for this class.
Enter the skill level required to participate in this class.
Insert the duration of the class.
Press the Add New button in order to add hours during which the class is available.
Header link type
Whether you want the link in the header to point to a link or a downloadable file.