If you want to completely exit your smallcase by placing sell orders for all the stocks, you can do so in a few taps.
From the Investments tab, tap on the smallcase you wish to exit, and scroll down to the bottom > then tap ‘Exit smallcase’
After you click on Exit smallcase, you would need to choose 'Whole' as the exit type
Once you choose a 'Whole' exit and tap 'Confirm Amount', you can then review the orders you are placing and the amount you are set to receive (at the bottom left of the screen). You can then confirm the exit by tapping on 'Place Orders'