Vector 3 dual to single pedal?

hi, wanted to try the V-3 dual sided pedals as a single, left-sided pedal, with a plain old Look Keo2 Max

the Fenix 5 doesn't recognize the left V-3 when i do this. I just assumed that it was the left side that was the master pedal, like the Assioma.

what do i need to do to convert the V-3 dual to a single sided system?

i know that i had an app on my Android phone. but i can't remember which one it was. i do remember that my particular phone didn't support the official V-3 app

thanks