Thanks again Scott. Not sure what version of Enterprise we're using. The current setup we have is maybe a bit unusual. A couple of the state departments (Michigan) have their own stand alone Portals, while so far the rest of the departments, including mine, currently share one (we may get our own soon). A separate department is the admin for them.
I know I have Creator privileges, and can add users to the Viewer level, but not to the Creator level. We can buy more Creator level licenses, but don't know what kind of budgetary/bureaucratic hoops are required to jump through. Above my pay grade. Guess I'll try AGOL.