Volume Controlled Encoder

Hey. : ) So… I could use some help getting started with installing an encoder on a Raspberry Pi4.

Volumio 2.806 (September 2020)

The encoders connections are labeled A, B, OV, Vcc - Bottom two are A, B with a line above them.

My hang up is running the wires tooooooo… I have no idea. : )

Thanks in advance!

Vcc Is 5v and I guess the 0V is ground.

That leave A, B & Lower A, B

If the plugin’s will not work with this. Could someone recommend one : )