Originally Posted by alluringreality
According to their forums there is a "gamut target editor", but I'm not sure how to get the "editors window". I wasted too much time trying to figure out how it's supposed to work. I'm not sure why they just don't put it in the "Gamut Target" area, create a default workflow with it, or have documentation.
Just in case you are interested, here is how in 4.3.2:
1) Tools --> Editor Panel --> Under Properties, pick Gamut Target Editor
2) Editor Mode --> Pick Persistent Gamut. Temporary gamut does not quite work.
3) Do a Copy Gamut. Then rename it to something else (GT30-gamut)
4) Now, you can click "edit whitepoint" to do a read (or edit) the whitepoint.
5) Or, you can now click read on RGB and it will take xy data.
6) Or, you can click "edit secondaries" and you can read secondaries xy data as well, instead of the derived values.
7) Or, if you really want to go total custom, you can edit Yn as well.
Now, the important thing is, once you are done with this Gamut, you need to "use" it. Go to Source Setting --> Advance Options and then pick this new gamut (GT30-gamut) you just create.
It will take a while for this to take effect, but once you are done, everything will now be based on this new gamut, including grayscale, DeltaLHS etc...
I do agree that there should be a workflow to do this. I modified the DUO version to create mine. which is one thing that CALMAN is good though. They give you a lot of flexibility to do whatever you like (be it right or wrong).