Microsoft has published an add-in for Office 2007, 2010 and 2013 allowing you to add a creative common license on your document.
This add-in will work with Excel, PowerPoint and Word – you can choose which add-in to enable when installing it.
You can download the add-in from http://www.microsoft.com/en-us/download/details.aspx?id=13303
Once installed, a new tab Creative Common is added
From this tab, you will be able to add all your Creative Common licenses you have created or create a new one; all license will be available for other Office application – if you create a new license with Word, this will be available also for Excel or PowerPoint
Create a new license
- Start Excel, PowerPoint or Word and hit the Creative Common tab
- Click to the License button and choose New License…
- Then follow the wizard to create your CC license; the last 2 options (Sampling and Creative Commons) will ask you additional details
Add an existing license to your document
- Once you have created at least one license, start Excel, PowerPoint or Word and hit the Creative Common tab
- Click to the License button and choose the license to use
The result of adding a license on Excel
The result of adding a license on PowerPoint
The result of adding a license on Word
Adding a license is changing the first button of the tab from Document Not Licensed 
to Document Licensed 
You can use this button to switch the license to use or remove it from the document
Your licenses will be saved within your document folder
