Edit: Found it out by myself, please lock! Tutorial. Go to the edge of the skybubble and place a reciever node, save and quit while holding it, start game back and just spawn a sender node and there you go!
Well this canvas already has that mechanism built in and the method is also described in the post. Also, here is the Asset Guide by rifte gifle. Hope this helps.
No. Those drop pods spawn inside the main area, under the ceiling. Even when I overloaded the map, the invisible barrier is still there.