To setup a prerequisites, in Classes, click on a class for which you want to setup prerequisites. Click to Edit the class, and scroll down to the section where it says Prerequisite class.

The way prerequisites work in PSM, when select two or more classes at the same time then both/all of those classes are required for the prerequisite.

In each student’s profile is a Prerequisite tab. If you have students that have already been taking classes for a while, you can use this section to update their prerequisite counts so they will qualify.