I have 3 different locations in my blueprint. 1) existing house 2)new hobby room/rec-room 3)main garage. I am placing a walkway between the existing house and the Hobby/Rec-room. They are on two different locations (elevation height differs). I am placing a deck and stairs between to connect them with a covered walkway. I cannot look “See” both locations at the same time. The deck that starts from the house is only visible when I have the house location on and the deck attached to the Hobby/Rec-room door is only on when I have the Hobby/Rec-room location on. I need to see both locations so I can connect them and place a roof over the entire walkway (decks). How do I turn both on at the same time?