For now, the three dashboards in my project are all linked to a single user group. We need to transition to three user groups so that we can assign the dashboards independently. What is required to take this step?
are you talking about the permission in access point?
IIif you are talking about this situation and you have the publisher, you must change the distribution list in the task (edit the task and check the tab distribute). If you don't have the publisher you must change the access rights on the .qvw files on the server (as you do as the any other kind of files)