Thanks for the reply. While this works graphically - it's not really what we're looking for, as we don't want to define an area, or a point - but rather just pickup the surface where it sits. The Datum Targets also appear to have no intelligence, so the rest of my DimXpert Geometric Controls turn red because it doesn't know what Datum A is.
You can create datum features on compound faces such as this one below. Please make sure they are exactly co-planer.
The example model is attached.
Hope it helps.
That worked perfectly Oboe, thank you.
This completes my first test part. I was able to fully annotate it per the drawing. Now I just need to make it look nice.