I am building my first Map Tour story map web app using the Map Tour template in Builder mode. When I click a tour point "pin" icon on my base map, a pop-up prompts me, saying that I can move the location of the tour point. But when I try to drag the pin icon to the new location on the base map, the icon doesn't move. It stays in the same geo-location on the base map and the base map moves. What mouse and/or keyboard operations can I use to keep the base map stationary and move the tour point instead?