How do I activate Microsoft Office 2010 Professional Plus?

To activate Microsoft Office 2010 Professional Plus, follow these steps:

Open any Microsoft Office application such as Word, Excel, or PowerPoint.
Click on the “File” tab in the top-left corner of the application window.
Select “Help” or “Options” from the menu.
Click on “Activate Product” or “Change Product Key” option.
Enter your valid Microsoft Office 2010 Professional Plus product key when prompted.
Follow the on-screen instructions to complete the activation process.
Once activated, Microsoft Office 2010 Professional Plus will be ready to use.