Pos only user on 13.8

Hi everyone, am a new user and this is my very first post.
Sry if I don’t know what I’m doing!
I have 13.8 right now, I can Create a POS as Admin.
Right now I want to create a user that can only have access to POS for my shop.
And i don’t know how rotation between different cashiers will work.
Tnx