How do I place Marginplus Sell Order?

Press F10 after selecting the scrip from market watch
You can also place Margin+ Sell from Start Menu > Action >Margin+ Buy
The Margin+ Sell Order window will open in docked format at the bottom of the screen

The Primary Order would be your Sell Order which would be default sent as a Market Order (In price box it will show the LTP for reference and it cannot be edited)
Enter the order quantity
For your secondary orders (Buy Orders)
Enter The Limit Price and Trigger Price auto populates
Edit the Trigger Price if required (Minimum Gap between the Limit Price and Trigger Price should be 2%)
Tick on Profit Price check box and enter your Profit Price (If required)
Click on Submit Button
Once your order has been placed you will be shown an acknowledgement message with order reference number

Example