It's not possible today to do conditional UI functionality except by tying it to a signature option and security group. This has come up as a RFE a few times (most recent one is this:
AI Applications - Ideas Portal
) so I'd suggest supporting this if you haven't already.
For read-only/required fields, I'd always suggest a global data restriction over conditional UI. You can still make it app specific if desired but it supports being global across applications as well. I find it much easier to discover and follow the conditional UI.
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Steven Shull
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