Django 2. How to add a user to the user group of their choice when registering?

Question

Django

There are user groups: such as teacher, student, simple user.
How to make it so that a visitor, when creating an account, can select a group to which he needs to be added when creating a user.
I should note that there are other user groups, such as Moderators, Administrators, and others, to which in no case can you add anyone. That is, this procedure must be done as safely as possible!

Answer 1

Add a field containing a set of allowed groups to the registration form, and add the user to the selected group in the view that processes this form .