You say you understand how to limit what User 1 and User 2 see but you haven't shared your understanding with us. Are you generating different outputs for them or are you using Content Categories to provide a dropdown that allows them to choose their user type?
The latter would allow you to set up various outputs that can be viewed, one of those could exclude what you don't want User 3 to see. However, whilst it would give them access to help that would not include the excluded content, they would still be able to select User 1 or User 2 and see it. It depends on how strict you have to be with what you do not want User 3 to see.
If it is vital they simply cannot see it anyway they try, then you need two outputs. The only other way would be to user Rh Server as well where access control can be enforced. See the RoboServer forum where this has been discussed recently.
See www.grainge.org for RoboHelp and Authoring tips
Peter, I am generating three separate single source layouts to manage my three users. I guess I was just hoping there was some additional logic available in RH that would allow the type of filtering I showed in my initial post. Maybe an enhancement for a future version?
Thanks for your input, as always.
There is additional logic to CBT's, but the system is really build for excluding instead of including. Having said that, head over to Peter's site for some detailed information: http://www.grainge.org/pages/authoring/build_expressions/expressions.htm
Thanks, William. I'll experiment using these examples.