Actually just now on my way home discovered a new feature ….
If I click the button for a single wipe, it also pops up the wiper dialog on the touch screen, so all the configurations are right there. You have to act fast before it disappears , so it’s possible that it’s always been there but I didn’t look at the screen right after pressing the button. Anyway, that greatly simplifies the process. While the controls are still touch screen at least I don’t have to click through the menu to find the controls
You can use the left scroll wheel on your steering wheel to adjust the wipers once you’ve pressed for a single wipe. Just click it right for more, left for less. No need to look at the screen at all really. There’s a little graphic on the wiper controls showing you this.