If you would like to have second admin to manage your resellers and users, you can create them ONLY by accessing DirectAdmin with admin privileges.
After login – click on List Administrators
Next, you’ll need to fill in details like Username, E-mail and Password. You can use the Random button to randomize your password. You can also use the ‘Send Email Notification‘ checkbox to send the new admin with his/her admin login access informations. The welcome email will be sent to the registered e-mail.
And you’re done.