It can be done but it isn’t super easy. See Design Pattern: Manual Trigger Detection. However, the challenge here will be that when you manually press the UP/DOWN button, you are unlikely to get that back into OH as a command. Instead OH will probably just start seeing the Rollershutter’s Percent value changing. So you will have to infer that if the rollershutter starts moving and OH didn’t issue a command first that it was manually commanded.
