Thanks for confirming it's not possible. Grouping symbols seems as good approach to handle symbols in general. I hope it works for flat to screen notes as well, it would help to organize the general info in the combinations states, sorting out other issues with MBD and Creo.
As for the surface texture specification, I guess I have to wait and see in Creo 7.0 if grouping will solve the situation.
It is rather disappointing it doesn't work in current version of Creo 4.0, 5.0 and 6.0, it's a common way of applying explicit surface texture requirements, especially when the surfaces are very small and you would like to minimize the amount of symbol graphics in the vicinity of the surface.
Also placing surface texture on extension lines of dims is wanted. Currently you can at least place on flat surfaces and drag the symbol away and an extension line will appear. There are dimension where it is not possible though (I have not got it to work at least), e.g. for cylindrical surfaces.
Basically if you could make a surface finish symbol behave like the datum feature symbol, then problem solved...
