This requires that you have the ExorLive Go Toolbox. Remember to have activated the edit exercise setting under the toolbox settings. (Enable editing of exercises in an activity)
In ExorLive Go:
Press "3 dot menu" during an exercise in a program (session), and get the choice: Move exercise up or move exercise down.
If you select the exercise up, is moved one row up and the window closes. When you press the selection down, the exercise moves one row down and the window closes.