In a portfolio, a number of projects can concern a single object to represent different hypotheses, exclusive of each other, for the change in this object.

Scenarios can then be created by selecting a set of projects to be produced. The different scenarios can be compared by means of specific reports:

Using a project portfolio, the project portfolio manager can generate scenario analysis and comparison reports to decide which scenarios to keep or reject.

In an arbitration portfolio, if several scenarios have been selected for different analysis portfolios, the project portfolio approver has access to an analysis tool which provides an overview. This is used, for example, to determine whether contradictory choices exist for a single project in the different scenarios selected.