Navigate into the Investment Pathways tab.
Click into the CIP you would like to amend:
Click into the Portfolio Tab:
Use the search box on the left of the screen to find Portfolios you would like to add to the CIP.
The all dropdown can be used to set what type of portfolio you would like to search for:
Search and select the + to add to the Portfolios Selected area:
Remove Portfolios through the bin icon:
You will need to add portfolios to any segments you have created. See article Central Investment Proposition - Adding Portfolios to a Segment