it doesn't work that way fallen. you'll probably need someone to explain the whole scheme to you. khelvan broke me in, so to speak.. and if you really want to help out with recruitment, someone will do that for you.

for a short answer, the hidden resources alpha through theta are simply arbitrary conditionals. the combinations of "on"s and "off"s ("and"s and "and not"s) provide unique resource conditions that can be tied to specific provinces. so a line that reads
Code:
recruit "monkeybuddies"  0  requires factions { gauls } and hidden_resource alpha and hidden_resource beta and hidden_resource gamma and hidden_resource delta and hidden_resource epsilon and hidden_resource zeta and hidden_resource eta and not hidden_resource theta
is defining recruitment for a specific unit (monkeybuddies) to a specific faction (aedui) in a specific province (turns out to be mrogbonna.. i think..), for example.

the individual HRs have no relation to specific regions or anything like that.