The admin panel has two user roles:
To manage admin users that can access OpenAdmin interface use Settings > OpenAdmin page
Or from the terminal:
To reset admin password click on the user in Settings > OpenAdmin page, then click on Edit button and set the password.
Or from the terminal: opencli admin password
To create new admin user click on the 'New' button in Settings > OpenAdmin page, set the username and password and click on save.
Or from the terminal: opencli admin new
Select the user on Settings > OpenAdmin page and click on the delete button then confirm.
Or from the terminal: opencli admin delete
:::info The Super Admin user can not be deleted. :::