Thanks for the info. Although I didn't find anything on these links that was like what I was trying to describe.
The particular solution I want to implement would let me have two portals, displayed side-by-side. THe first would list usernames, the second would list all the possible permissions. I want to let the user click on a user name, and the the permissions which that use has will highlight. All possible permissions will still be shown, just the related ones highlighted or otherwise indicated.
I am not describing this too well, but saw this in a tutorial on FileMaker Magazine. The tutorial was not about this topic, but the example on the video had this interfact. Very cool, but i can't see how it was done?