Sorry if these questions have obvious answers. I've been trying to plan my first mission and I'm having problems. First, I notice from video tutorials that once you've created a waypoint, you can place your finger on it and move it around to get the location exactly right. But that doesn't work when I do it - has that feature been removed? Second, can you delete a single waypoint if you've created it by mistake? All I can find is a button for removing ALL the waypoints. I'd be grateful for any advice on this.