This feature will be useful if you want your members to be able to use a certain appointment pass only for a specific session and not for a whole appointment type.

Step 1: Edit the appointment pass.

In "Products" > Appointment passes > Click on the pass you want to set up.

Step 2: Configure the compatibility with the session.

General click on the appointment pass or click on the pencil icon.

Scroll down to Compatibility.

If not done yet, select the appointment type the pass is compatible with, then click on the pencil icon.

Select the session (duration) it is compatible with and click 'Save'.

Click 'Save' again at the bottom of the form.