Add Group Sync for MR and CT

Would like to be able to do Group Synching in UV like is available in RA1000. An example of this would be when a Radiologist is reading MR or CT Total Spine studies in RA1000 they are able to Sync the Upper Spine by itself and scroll through those images and then Sync the Lower Spine images by themselves and then scroll through those images. So they would Sync Viewport 1, 3, 5 and 7 and when scrolling all of those viewports would scroll together and then they would sync viewports 2, 4, 6 and 8 and those viewports would scroll together.