SaveWayPoints and Delete (with switch)

Hello. I can “savewaypoint” with Rc7_option in Rover 4.0, but how can I delete it? When I switched it to manual mode in previous versions, I could still delete it with the Ch7 switch, but in 4.0 is this not possible?

Also, when adding waypoints, can I make it possible to hold it for a certain time at that point? Like waiting 10 seconds each time I go to the point I saved?
Of course this should be for waypoints to be added with the help of Switch.