I’d like to know how I can manage users when they’re approved. For example, in the admin panel it would have a button named “Manage Users” then it would open a PopUp. In that PopUp would have an Input to look for the registered users and when it appears it would give to edit user, to remove user etc …
Here are some resources that may help you without re-inventing the wheel.
or here are some other templates you can take a look at to see if one fits your needs or is similar.
Hope this helps.