When does godfather 2, let you recruit new men?

i've done a few mission's, mostly about 20 favours, not really got very far, i'm doing favours, to earn cash, but i need to recruit atleast a medic, solider, technician and a new demolishioner. i need a tech guy, to hack into vaults, my last demolishioner died and i want a solider to fend off the police. i've taken over la massion rouge, the tavern and the compound. i need men to access the stuff in those places, not sure who tho, also how do i get to the new missions, have i got to complete these missions first