What is a Sub broker and How to become a Sub broker?

What is a Sub broker and How to become a Sub broker ?

Hey!

All these queries are answered already. Kindly search once before posting.

Thanks

Not so clear about this…but from what I know, to be a sub broker you need to register yourself with a main broker. In this role, you may assist investors, act as an agent between the trader and the exchange and so on.