Pay structure for an Agents who work on a team ?

[Dell Schlabach]

We are doing some restructuring for 2015. 

Couple questions  ...

1. Realtors with a team, can an an individual Realtor, who has a more properties then he can handle himself, hire a Realtor to work for him exclusively, for a profit split, or a wage and commission structure, I see many of the top agents have teams, wondering what that setup and pay structure typically looks like. 

Does the agent with a team, doing the "hiring" need to be a broker?