About the Zendesk Guide plan types
You must have Zendesk Support to have Zendesk Guide. The Zendesk Guide plans are available on any Zendesk Support plan.
Creating a Help Center for one of your brands
This feature has the following plan restrictions: Support Enterprise and Guide Lite or Professional: Five brands, one Help Center Support Enterprise and Guide Enterprise: Five brands, five Help Centers Support Enterprise with Multibrand add-on: 300 brands, 300 Help Centers