Is it necessary to finish the whole job set the plays the thing in order to get the 5b or can we just complete the plays the thing to get the 5b?
If you're not overpriced (for your stays at least) then getting volleyed is good. Once you're overpriced for your stats, then you do vollies with another person.
Best way to get a volley is join a club that's volleys, or do lots if jobs and upgrade to meet your price .