I’ve searched for an answer but there doesn’t seem to be one.
I’m having a problem adding an activity to a swimlane. I’ve done numerous process diagrams with swimlanes but this particular one is being a bit of a diva. It is refusing to add any more UML diagram components into the swimlanes. I can select a pre-defined activity, for example within the frame (but not on the swimlanes) and can drag it to where I want it. When I let go of the mouse button, the activity returns to its original place within the frame, outside the swimlanes. The swimlane is not locked. I’m baffled! Does anyone have any clever ideas?