Creating a login without emails

I am new to Bubble, so forgive My noob question. I am trying to make a login and password form, without using user’s emails. I have users who are employees with 3 different roles. I need to insert them into my database myself with their names and passwords (and give it to them later on). then according to their role, direct them to different pages.
in the user’s data base, I can define login only with an email. need some direction.

Possible. Look at this question and solution: Allow users to login with username or email - #16 by ethan