Short answer

What is Power of Attorney (POA) — explained here in the Arrow / Indian securities-market context. iRage Broking Services LLP (SEBI registration INZ000011262), product name Arrow. Registered office: Gift City, Gandhinagar.

Details

For operational steps (open account, add funds, place orders), use the matching how-to articles under Account Opening, Funds, or Arrow. Regulatory definitions ultimately follow SEBI, exchange, and depository circulars.