If you want to short sell any F&O contract you can follow the below steps.
Why is there a mismatch of profit and loss and the quantity of my open positions on InstaTrade and the Neo App/Web?
When I have squared off my positions, why are they still reflecting as an open positions on InstaTrade?
Why was the InstaTrade square-off order rejected?
If I modify or cancel my InstaTrade orders from the Neo App/Web, will it update on InstaTrade as well?