It can, to an extent. The GhostSrv.exe executable can be constrained to select the multicast group addresses from a different subrange of the group space by default, by opening the "File" menu "Options...". The options panel has some entries there to control the start and the end of the range of group addresses it can use.
GhostSrv randomly picks an address out of that range for each session; it's intentional that sessions get unique group addresses for as long as they run, since the multicast distribution tree for a particular session doesn't overlap any other one and having separate group addresses keeps the traffic separate.
You can't, however, configure the specific single multicast group addresses used by Ghost to discover the GhostSrv session and the Console's clients to discover it, nor can you configure the group addresses used by the multicast file transfer facility in console. It's not that it can't
be configurable, it's just that it's not really something there has been any demand for so far.