Ok Tony,
I should be able to do it for you, still have my Pa 3X at the moment.
I will try and find the instructions, maybe pa900 is lacking this function, though I wouldn’t think so.
If you are interested in knowing how to do them, I can take you thru it, provided your keyboard does have the function,

I got my keyboards set up in my new music room this morning, at long last they’re all in the same room, not all over the house.