You can pledge stock to increase margin by following the steps;
Through IIFL Mobile app:-
Login to the mobile app
Click on Funds section available at the bottom of the screen
Click on "Pledge Holdings to Increase Margin" link below the "Available Margin"
Select the stocks that you want to pledge.
Click on Submit request
An OTP will be sent on your registered mobile number & email ID
Enter the OTP on the CDSL or NSDL page to approve the pledge
Once the pledge request is approved, margin will be provided against the pledged stock within 5 minutes.
Through TTweb-
2. Click on Holdings
3. Click on pledge
4. Then client can find a section "Create Pleadge"