On Nuendo 1.6, you could link 2 tracks together, and when you armed one track for recording, it would not automatically arm the linked track(s). This was really nice for doing vocals because a lot of Hip-Hop clients like to double their adlibs or double their chorus and pan them left/right. I would link the panned tracks in my template so they are easy to mix and keep the same level.
On Cubase 8, they added a nice “Link Group Settings” window where you can specify what parameters you want to link. There’s no option of disable or enable “record” linking, so when you arm a track to record, it arms all of the linked tracks at once. This is not good when linking panned vocal doubles. I always have to hold shift, click the record arm button, and disarm the linked track(s).