Assigning Documents to Activities You can assign relevant documents to activities, projects, and WBSs. To assign documents: On the Navigation Menu, expand Projects and click Activities. On the Activities page, select an activity and click the Documents detail window. Note: To assign a document to a project or WBS, select a project or WBS in place of an activity. In the Documents detail window, click Assign.... In the Select Document dialog box, select a document and select Select. On the Activities page, click Save.