[OT]
I don't quite understand. For example, in iGO_World 64-bit, under [Route with waypoint], there's the option to delete and/or add waypoints – that should be perfectly sufficient... 👍🤔

...especially since you're not allowed to use a smartphone/tablet while driving in most countries, and it's generally considered dangerous. A stop of 15 seconds (via button) or 30 seconds (via menu) is negligible, isn't it?
[/OT]