How to add a new user to a WordPress website
Log in to your WordPress website. (e.g. example.com/wp-login.php)
When you’re logged in, you will be in your ‘WP Admin Dashboard’.
Click on ‘Users’.
On the left-hand side, you will see a menu. In that menu, click on ‘Users’.
Click ‘Add New’.
Across the top, click the ‘Add New’ button.
Fill out the New User form.
* The "Username" can NOT be changed once it is set.
* Make sure the email used is accessible. It will be needed to retrieve the new user account information.
* Check ‘Send User Notification’ to send the new user account information to the email associated with the new account.
* Set the "Role" to Administrator or to an appropriate role level for the user.
User role level information can be found here: https://wordpress.org/documentation/article/roles-and-capabilities/
Click ‘Add New User’.
At the bottom of the form, click the ‘Add New User’ button.