Stoploss query

How can i enter Stoploss to OTIONS CALL trade? Where in Zerodha i need to enter the stoploss? Does stop loss means that the order will be excuted at the SL price? What i understnad from the SL is, if i buy trade at Rs. 5000 and put stop loss at 4900, then if price comes down to 4900 then it will automtically get Sell, Is it correct?

Yes. you are right. 4900