Struggling with motor set up

[The Jazzman]

Hoping that the more experienced members will be able to help me out here.

To explain, at the moment tuners A & B are set up on a fixed dish for 28E and the third is set for the motor, a TM 2300, programmed for USALS with the Long & Lat checked from the stab site.

While I have now managed to reach the point that I can move the motor (via advanced sets, with extra voltage, thanks to all previous posters and most of the weekend sitting reading the forum), I am completely confused/ lost/ not understanding (delete as appropriate ) the next step in the setup to select the different sats and tune them in.

Now, I'm guessing that it will be so clear ONCE explained to me, but could some kindly person please give me that first vital push on the path?

Many, many thank.

The Jazzman

PS, should say that I'm using the latest VIX image