In my model I have several MTTR/ MTBF's that I turn on and off depending on what experiment I want to run. As it stands, I have to open each MTTR/MTBF individually and enable/ disable them. Is there a way I could link all MTTR's to a GUI and press a button to either disable or enable all of them? In other words, I want to find an easier way to turn on and off several MTTR's.