You can set up an unlimited number of users in ASQ Online. This includes Account Administrators, Program Administrators, Providers, and Reviewers. You can have as many of each role assigned to your users as you need. 

And, users can be assigned multiple roles. For example, you can set up a single user as a Program Administrator, Provider, and Reviewer. Users can toggle between their multiple roles using the dropdown menu at the top of the ASQ Online webpage.