You can add new users to your WordPress account by following the steps below.
1. Log into the backend of your website.
2. Under the Users tab you will be able to add new users and edit existing users.
3. Set preferences for the user such as: username, role, contact info, bio info, profile picture, etc.
Note: There are different permissions for each of the different roles you can assign to users.
Administrator- has access to everything.
Editor- has access to create, publish, and edit all posts.
Author- has access to create and edit his/her own posts.
Contributor- has access to write and manage his/her own posts but unable to publish. He/she only has ability to submit for review.
Subscriber- has access to manage his/her own profile and read content.