Not sure what you're asking. Once you have a DVC reservation you can link it to your MDE account. It should stay there until you finish the trip.
Are you trying to set up a such that any reservation you make will automatically go into your DME account? That is not available, at least not yet. Some "improvement" are to be added ...someday.
Are you trying to set up a such that any reservation you make will automatically go into your DME account? That is not available, at least not yet. Some "improvement" are to be added ...someday.