How can I create new users inside my app without the need to re-loggin after every new user is created?

The scenario is this:

To register new users to my softr app. I need to log in as an admin to access the signup form;

But then when I register a new user, my admin session expires and the newly created account takes the session.

How can I create new users inside my app without the need to re-login after every new user is created?