Portfolios are groups of projects that aim towards the same goal. Each project update their status and you get an ultimate overview how things are going. This way you can detect and respond to problems at an early stage. You can also discuss priorities and other issues to be addressed with the other portfolio stakeholders.
The Portfolios tool is an add-on to Projectplace Enterprise. To access the tool you must be an account administrator or be added as a stakeholder in a portfolio.
On the Portfolios overview, you will find all information and help available on portfolios in Projectplace.