If you want to make changes to one of your portfolios, pick the portfolio of your choice in the "Portfolios" tab. Once on the reporting page, select "Edit portfolio".
When editing your portfolio, you can choose new investment focus areas and also change its risk level and investment horizon - through "Edit Profile & Setup".
Please make sure to click "Recalculate my portfolio" and finally "Save and continue" in order to confirm the changes. Your new preferences will be taken into consideration for the next review of your portfolio.