The conductors don't get a seat if there are passengers to fill them; they crouch in the door-well, bent over the outside passenger. Outside Harare writing out passenger tickets seems to be the norm, but this is ignored in Harare. Kombis are a favourite target for police; on the 25 km stretch from Harare to the bedroom community of Chitungwiza (Zimbabwe's third largest city) there are usually around 5 police roadblocks, looking for infractions they can 'spot fine'.
Children are handed to other passengers if the mother already has one or two on her lap. It can be a man or woman, and I've never seen anyone complain; they will help the child eat, clean it's hands after, and generally treat it as they would a niece or nephew.