The document discusses sub-brokers in the stock market. It defines a sub-broker as an intermediary channel for brokers who provides brokerage services to clients and earns commission. It outlines the registration process for sub-brokers with SEBI, eligibility criteria which includes education and age requirements. The key differences and functions of brokers and sub-brokers are explained. Code of conduct and guidelines issued by SEBI for dealing with brokers and sub-brokers are also summarized.