Admin users
The Users page contains the list of users and their data in the system. Users can be added, edited, and deleted from this page, and roles (super admin, admin, editor, and viewer) and groups can be assigned to users.
Add user
Click Users within the left menu:
Click the + button on the top right of the page.
Fill out the information:

If you wish for the user to use a 3rd party OIDC provider for logging in, in the future (e.g. Sign in with Google) then check the Require OIDC login (no password) checkbox.
Click CREATE.
View users
Click Users within the left menu:
Search or filter the users you want to view.
Here is a test user example:

On the top right of the screen, click the pencil icon to edit it or the trashcan icon to delete it.