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Did you check out the User Management Docs page that was linked to at the bottom of the Doc you linked to?
Please give it a read and let me know if it helps.
Ryan, AppDynamics Community Manager
Yes, I read the docs. The problem is I don't have desktop configured on my Linux machine, hence I don't know how to access the console UI on localhost. However I was told we rarely need to make any changes on the console, so I guess I don't need to access the UI for now.