Move or copy items from one location or WBS code to another if the location or WBS code was not assigned, or it was assigned incorrectly.
To do this:
1) Select the items
2) Right-click from the header row and select Move/Copy to move them to the correct WBS code.
TIP: In some areas of work the same part of the project is repeated many times. For example, you may have several floors of a building. You can take off one floor, then copy the items on the spreadsheet into the other floors, and make required changes to the subsequent floors.