Click S to go settings (you can also triple click the bottom right corner).
Click Enter New License
Enter your PPU account credentials in the PPU Account Login section.
PC Name will be the name of the PC in Windows.
Under Description, enter a description of your PC that will help you identify it in your list of licenses on the Event Manager website.
Copy in your redeem code, and click Activate:
Congrats! Your license is activated:
Transfer a License
You can transfer your license 3 times in the first year after activating your license for the first time. To do so you must first Deactivate the license on your old PC.
Open PBU Settings by clicking S on your keyboard.
On the bottom right corner of the Preferences tab you'll see the License box.
Click Enter New License and a pop up window should appear in the center of your screen. Click Deactivate current License and the Yes in the confirmation window.
That's it for the old computer. In the License section of PBU Preferences, your duration should now be Trial.
Open PBU on your new computer and follow the steps to activate PBU from the first section of this tutorial. You can find your redeem code in your original email when you purchased PBU, or on the Event Manager webpage in the Photo Booth Upload Licenses section.
Congratulations! You have successfully Activated and transferred a license.