Well they should be an even trade for services. The team gets in for free, gets free air or discounted Co2 because that costs you field money and most fields have there own HPA so you can give it our for free.
The team members are usually responsible for reffing, field maintainence, trash removal and other basic field needs. For this the owner lets them in for free anytime they are coming out to play, gives them free air and any other perks that you might want to give them. It will vary from field to field!
We have had many, many teams over the years and they never seem to last long because teams tend to fight alot and are alway hot in the beggining to help but then usually fade after a few months.
Combat Zone Paintball