Order types & validity

What is an Iceberg order and how do I use it? What is order splitting? How to use the basket order feature on the Rupeezy app? Does Rupeezy provide "Good Till Canceled" (GTC), "Good Till Date" (GTD), or "Valid Till Date" (VTD) orders? Can I place a Cover order on the mobile app? Can I place After Market Hours orders? What are Automated Manual Trading (AMT) orders? How to short sell? What are stop-loss orders and how to use them? Why did my limit order execute at market price instead of my specified limit price? Why do orders get rejected? Why did the order get executed despite the price on charts and market depth not hitting the placed order price? Why was my stop-loss order triggered without the trigger price being hit on the chart? Why am I unable to buy a stock even if it is trading on the exchange? How to place buy or sell orders without adding instruments to marketwatch?