Trading with leverage (also known as margin trading) means trading securities by putting down only a percentage of the total value of the position.
You can view and change your current leverage in the app settings: go to Home > tap the Switch button at the top of the screen next to the account name > select the Live or Demo tab > tap the account you want to change the leverage for > Trade options > CFD Leverage.
Leveraged trading can give you access to positions of a higher value than the funds in your account. This means that both profits and losses are magnified, making leveraged trading a high-risk endeavour.