This may be something to take up with your VARs AE. Judging by the dearth of responses, there aren't a lot of people trained in EPDM on this forum. You might also try asking on [link swcad@googlegroups.com]SWCAD][/url] as I know Dan Bovinich had the training.
You need to set up revision number components and revision numbers to suit the schemes that you want to use. The only way that i can think of to switch is to have a workflow state that incorporates a change of revision scheme as part of the transition to it.