This doc will give you details on how to add a new user to your website and an overview of user roles.
Head to the lefthand menu and select Users. You can then add a new user by creating a username (don’t worry, they can change it once they’ve logged in), adding their email and selecting a role. You have the option to skip or send a confirmation email that will require confirmation. Once they’ve been added, you’ll see them in the list of users for your site.
Once a user has logged in successfully, they’ll be able to change their username and password if they’d like. If you’re using Google login, you don’t need a password.
User roles can be changed by an Admin at any time.
Administrator: This user has access to all the administration features within a single site.
Editor: This user can publish and manage posts including the posts of other users.
Author: This user can publish and manage their own posts.
Contributor: This user can write and manage their own posts but cannot publish them.
Subscriber: This user can only manage their profile.