Stock brokers are basically people who suggest you, how to trade? with whom to trade? and other essential information hat is needed for the trader to know about.
Secondly, there are two types of brokers
- Discount brokers
- Full service brokers
so discount brokers like Zerodha, 5paisa and othes work online without human intervention.
Whereas, the full service brokers like Motilal Oswal, ICICI direct and others have human intervention and are preferred by many people who trade.