If you are a manager, you have the ability to add users to the system via a web browser.

Go to User Management in your menu and select the "Actions" button on the righthand side of the page. Then select "Add a user".

This will present you with the following screen:

Note that all fields with an asterisk are required and email addresses must be unique when adding a new user. If you have an issue with an email address already being in use, this article may help you.