in Forma Lms there are several ways to use subscription codes.
Basically, you can use:
- the same code for everybody
- one single-use code: every user has a different code that can only be used once.
I will explain how to use the first option: go to the course settings (in the administration area), look for Code for the automatic subscription to a course
Insert the code you like, and your users will be able to insert that code to automatically suscribe to a course.
The code has to be inserted in the related field they can find in their user profile.