Stop loss limit order or SL order gets placed on exchange when the trigger price set by you is hit in market. Once triggered, it acts like a regular limit order.

You can add a stop loss to your regular order.

Step 1: Click on Buy/ Sell to open the order pad of the desired security

Step 2: In the top navigation pane, click on "Regular order"

Step 3:  Enter the quantity and the price. (The market price is automatically selected, if you want to place a limit order, click on "Custom Price" and enter the price. You can also choose the price from market depth)

Step 4: Click on advanced options, and on SL (Stop Loss Limit order) Enter the stop loss trigger price and your custom limit price

Ensure it is within the specified range

Step 5: Click on Buy / Sell to place the order

Step 6:  If you have set up a review screen, you will need to confirm the order before it gets sent to the exchange.