I paired my Di2 system, to my 5S plus today. I normally use an Edge 1030 when on the bike but decided to use the F5S Plus today instead.
On the Edge 1030, the auxillary buttons on the tops of the shifters send a command to the Edge 1030 to switch between data field screens. I was expecting this to work the same on the Fenix, but the buttons did nothing. I also could not find any option to enable this functionality. This would be more useful for the Fenix than it is for the Edge series, as pressing the side buttons to switch between screens is fiddly and unstable on the bike.
Is this a currently implemented feature that I'm failing to find, or not currently implemented? If it's not currently implemented, can we please have this?