Yes, you can add unlimited users to the dashboard on a paid account. To do this, login to the dashboard and go to the Settings Module on the bottom left. There is a tab called users.
When a new user is added, they will receive an email prompting them to create a login password (their username will be their email).
By default they will receive notifications when ever a report is submitted. They will have to login and adjust their settings to receive the reports that are important to them. There is more information within our alerts & notifications help desk page.