Hi, unfortunately this is not good. I’ve tried it, but if the user clicks the button, he passes it to the other user level. However, your previous level is no longer available, so you can not access it for the course.
In addition, I do not know how to display only a few members within a certain level. Or you can see all members and you can either sign up or either. So it’s not good because I do not want every 3rd level user to allow, only some who have applied to both levels.
Instead, a user should be able to sign up to level 3 and level 4 with that email address.