The only "safe" way of doing that is to create a netlist file (or edit existing netlist file).
You can place "Spare Parts" and draw traces in "Draw Mode" but unless you have a netlist file they will all be Net0.
I'm pretty sure this wasn't the answer you hoped, for but this is the way Xpedition works.
you could try Smart Utility "ConnectionPlanner".
I never use it but I think it could be useful for you. This S.U. It's not visible by default, you need to enable it through "Smart Utilities Option".