I am new to using Openlp and am trying to see if it will do what I am hoping for. I am looking for a way to switch between an announcement presentation and the main sermon presentation without seeing the desktop in the process. When I load two presentations in the service, then send one "live" and then the other one, there is a second or two when the desktop is shown on the extended display (the projector). Is there a way to avoid this? I know I can embed the announcement presentation in the sermon presentation, then hit "esc" to transition to the sermon slides, but I don't prefer this setup.