Allow users to become affiliates from other plugin's user registration form

Hello Team, Firstly, I would like to mention that the plugin shows your hard work and works amazingly.
I use a plugin named RegistrationMagic for registering members on my site, and I wish them to become affiliates automatically.
It would be great if you could add this feature where, using any other registration form, the users can become affiliates.

Thanks in advance.