To Manage Project Suggestions, you can:
You will see a window listing the projects you are a manager for with pending suggestions.
Note: Projects with no suggestions and projects you are not managing are not listed. You also need to be logged in to review suggestions.
In this example, I am a project manager Project Server 2003 Deployment.mpp. This project has 1 pending new task, 1 pending new resource, 2 pending suggestions to existing tasks and 1 pending suggestion to an existing resource that I need to review.
Click in the project you wish to manage to review the suggestions. The bottom part of the window (as shown below) will become populated: