To view and edit a task's resources, open the Task Information dialog box and select the Resources tab. This task shows you how to both view and make changes to a task's resources.
Editing and Viewing Task Resources
Double-click the task you want to edit.
Select the Resources tab.
Select the resource you want to assign from the drop-down list.
Double-click the task you want to edit. 
Select the Resources tab. 
Select the resource you want to assign from the drop-down list. 
Enter the Units value for this assignment. 
Click OK to create the new assignment. 
