The Users page can be found in the administration menu under Security. The user's page lists all the users in Continua and allows you to create, edit and delete them.
Creating a User
Clicking the "New User" link will pop up a dialog with all the input fields needed to create a new user.
All fields are required except Xmpp Id. You can also optionally choose to add the user to a group by selecting the group or groups from the "Member Of" section.