You can purchase Doc Creator annually by going to My Account Settings > Doc Creator Template. Then click Purchase (or 7 day trial).
Once you are in a case, you can go to Additional Documents > Doc Creator to begin:
We have additional help center articles about Doc Creator, along with this webinar going over how to use the feature: https://www.crowdcast.io/e/doc-creator-sneak
Keywords: Doc Creator, Purchase Doc Creator