setting up for vote scan in MTS2000

[robbip]

G'day all,
I am trying to cut down on the number of zones I have in my work radio (MTS2000) at present I have 6 train control chanels that vote in 1 zone
Each train control chn is for a different dispatcher
Each Chn has 3 or 4 sub chns ie the all recieve on different freqs but tx on the same one.
I have seen radios that display the base freq eg Nullarbour with the other 3 sub cns for the Nullarbour remaining hiden
I would like to have all 6 main chn and their 3 or 4 sub chns in the one zone and only see the main ones then add my other rail chns to this zone and redeploy one zone
Do I need six scan lists or is there an easy way of setting it up.
I am using CPS and the radio is flashcoded right for voting
Any help will be greatly appreciated