[WC3 Modding Help] How do I add generals to conquest?

I am completely confused and clueless on how to add/attach generals to already existing units or newly added units placed in 1939 conquest map. I've looked through other army units with generals attached to them, checking their hex code for general according to CCW615's BTL guide and Canadian Modder's oral explanation, and could not come up with a solution to get the correct hex code. Is there some sort of method to find a specific general, either newly added generals or existing generals, and get it's appropriate hex code in conquest?