If you're talking about the tags, then you should refer to the following links:
Easier to Read Pro-106/197/PSR500/600 Digital Scanner Manual
If you are visually oriented, try the first minute or so of the video, the Pro-106 programs exactly the same so do not worry about the difference:
How To Program the PRO-106 Digital Trunking Scanner - YouTube
To program a number, you hit "1" and then the number to get the number you want, special symbols are "0" first. I found it pretty tricky at first, but you get used to it.
I hope this helps.