Absolutely!

For Web App users:

Simply log in to your Account > "Investments" > "Plan" tab > click on "Edit Goal". Make changes to the portfolio as you wish and finally, click on "Confirm" to update the portfolio.

For Mobile App users: 

1)To edit your goal, kindly click on "Home" > "Your portfolios" > click on ">" for Individual goal

2) Click on "Assets" tab > "Adjust Risk"

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3) Click on ">" under "Core Portfolio" or "Higher Risk" depending on the portfolio you want to change to:
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4) Finally, you can use the Slider that appears to adjust to the portfolio you want.