Through your members page in your member groups tab you can create different member groups to help manage your business.
Note: You can apply your different members groups to your session templates, too!
From your recurring templates page when you select Class > Exclusive. You can create exclusive sessions and select member groups or specific Packs and Memberships.
Take a look;
From your Class templates, select 'Exclusive'.
Tap the 'Select Member Groups' button option and select the group you want to assign to session.
Hit the 'Confirm Selection' button and the group will be saved to have access to the session.
These session will only be available to the members in the selected group to be able to book in.