1. Start the application by clicking on the "Change Level"  menu on the "Add-ins" tab on the ribbon and then clicking on the "Change Level" button.
2. In the window that appears, select the desired level in the first Combobox.
3. Select an area to change. The default is the current selection.
4. Press the "Change" button to finish.

B. Registration Function

1. Start the application by clicking on the "Change Level"  menu on the "Add-ins" tab on the ribbon and then clicking on the "License" button.
2. In the window that appears, enter the product key in the 2nd textbox.
3. Press the "Registration" button to finish