Hi Guys

I'm looking for some advice, i bought an original dreambox 600pvr about 5 weeks ago and got a set of clines which are working perfectly. Now my Dad wanted a box for the sitting room as he spends most of his time in there, so i bought a clone 500s for him. I have a motorised dish. I know i can use the cable out to connect his box but that would mean only one box could work at a time? Also to splash out on another set of clines for his box would be expensive ( but he is willing to pay) but i'm just wondering in the experts opinion what would be the best way to set up my system overall in order to get the most from a box system ??? Tia