If you have not already done so, you first need to open an account and make sure you have funded it with sufficient funds.
1. Go to the Markets, select the Let us manage your money.
2. Decide on which portfolio suits you and click the Invest button.
3. If this is your first time, you will be asked to complete a set of Suitability questions specifically for portfolio management (this is different to an appropriateness test, which relates to self-directed investing).
4. Once completed, you can proceed to the trade ticket where you enter the amount you would like to invest.