Keys under wheels

Would it be possible to use Keys under wheels when there no option to select for :

1) selecting between some parameters. For example we could assign Frame 1A and Frame 1B to the same wheel and select the one we want to use by clicking on Key under the wheel. With double click both parameters would move in the same way and If the key is maintained Frame 1A and AB would move on opposites ways (opening or closing according to the sense of rotation of the wheel). Same for keystone.

2) Fine option for parameter, so we could use one hand for fine parameters.

Thanks
Best
Stéphane