Yeah, sorry, forgot to mention the PGM (program) button. So, to program a channel:
MANUAL
(channel number), MANUAL
PROGRAM
(frequency, using decimal point), ENTER
(At this point, DELAY can be toggled on if you want, or you can do that later.)
Now, at this point, you can hit PROGRAM, and the scanner will step to the next channel (NOT the next vacant channel, the next channel in numerical sequence) and remain in programming mode. You can then program that channel if desired, and contiune programming each channel in order. Or you can hit MANUAL and the scanner will exit programming mode, staying on the just-programmed channel. Or hit SCAN and the scanner will start scanning normally.
I haven't used the search feature on my 2022 in so long, I can't be positive, but I don't believe it has search lockouts. Remember, that's a pretty old scanner, and lacks alot of bells and whistles we now take for granted.
As for the channel, frequency thing, not sure what you are confused about here. This is your basic scanner, 200 channels in 10 banks of 20 channels each. Each channel stores one frequency. It also has a 10 channel Search memory, as I recall.
Edit: Here are a couple of links for you:
Operation
Specifications
Mark S.