To sell your shares:
Tap on the Portfolio tab.
Scroll down the page to your shares and tap on the share that you would like to sell.
Scroll down the Sell button and tap on this.
On the next page, type the number of shares you’d like to sell next to No. of Shares.
Press the Review button and Confirm Sell.
You will then need to wait for the cash to settle before you can withdraw them.