700C and VST control

I want to understand how 3rd party vst controlling is supported by Rolands V Studio 700C
 
I understand that parameters automap to the controller but my experience with Novation Automap tells me that this rarely produces a desireable result.   I set up custom mappings for 99% of my vsts.  Does roland support this type of mapping?  is it stored?  What does the interface for configuring it look like?