You can tap the hazard icon and it'll save that location then fill in the details once you've come to a stop / destination. No doubt some people will select the options whilst still driving unless a passenger in the vehicle.
You do know that under the new laws you cannot touch or tap the screen of your mobile while driving.
Even if the phone is in a holder attached to the dash or screen, you cannot at any time touch or tap the screen for any reason, change your music, adjust your sat nav, answer a call, on hands free, or report on waze or other app.
If you are seen doing so its a £200 fine and 6 points.