I currently have just 1 Virgin set top box in my lounge but have arranged to have 2 more installed in a couple of the upstairs bedrooms. I need to know how the engineer will be wiring in the 2 new installations so I can figure out where I want the cabling to go.

I currently have 1 cable coming into the house that leads to a white box mounted on my lounge wall, I then plug a cable into that and the other end to my set top box. Will the cables for the 2 new installations also need to come from this same white box? Or can they split the cable before it gets to the white box? Or can they wire in a new cable from outside?