Here is a link to a video illustrating this process...
Here are Instructions for activating Notion or Progression once the program has been installed:
1. Open Notion on your computer by double-clicking the icon.
2. Enter your Product Key and email address into the correct fields. Your product key can be found in your my.presonus.com account under "Products." Use the same email address that you used for your my.presonus.com account.
***If you are using Studio One Pro+ (formerly known as PreSonus Sphere), simply check the radio button for "PreSonus Sphere," and enter your email address and password.
3. Press the Activate button and you are all set.
*If you need to do an offline activation for Notion, please submit a ticket in your my.presonus.com account under the "Support" tab.