Forma allows the creation of subscription codes:

Admin > Settings > System configuration > Code

Click add button to insert a new Code: 

Code features

1 - Code list: Administrator can add new codes and set an unlimited use.

Code list shows used codes, username and unlimited use. Used codes cannot be redeemed anymore.

2 - Generate new codes : Administrator can generate new codes, insert the number and selecting unlimited use, 0-9, a-z or A-Z

3 - Import code from a csv file

4 - Course selection

5 - Code assignment: Administrator can assign code to the users usign the organization chart and company roles

6 - Administrator can edit code title and code description

7 - Administrator can delete the codes

Once the code has been created and assign, the user can redeem it from the login frame: