Project Information appears at the top right of the Tasks page, below the Project Details.
Project Administrators can attach up to six files in this space, to make them readily accessible to everyone on the project. These may include items like the project configuration document, and the information management policy.
The files you place in the Project Information area won't be superseded automatically, which means you can have all users referencing a specific version of a document. It also means you should check regularly to make sure the documents are still current.
Click the Attach button to select the files you want to share from your document register as Project Information.