Here is a starting point of documentation that help to setup the Portals (install, configure, manage content, etc.):
[View:https://docs.microsoft.com/en-us/dynamics365/customer-engagement/portals/administer-manage-portal-dynamics-365:750:50]
The licensing guide states this:
The Dynamics 365 Portal provides you the capability to extend your Dynamics 365 for Sales, Dynamics 365 for Customer Service, Dynamics 365 for Field Service, or Dynamics 365 for Project Service Automation scenarios into cloud hosted web portals, each of which is easily configurable for your employees, partners and customers.
One portal is included with any Dynamics 365 Customer Engagement Plan Business Application subscription, per tenant, shared across all Customer Engagement Plan Business Applications. A Customer Engagement Plan Business Application subscription is required to administer and configure the portal. Each portal may only be associated with one instance.
Starting August 1st 2017, access to the first included portal for the tenant, customers will be required to purchase a minimum of 5 Full User licenses of Dynamics 365 Customer Engagement Plan, stand-alone Dynamics 365 Applications (Sales, Customer Service, Field Service or Project Service Automation) or a combination. Existing customers will not be impacted with this change until renewal. New customers who need to purchase less than 5 users, may purchase the Portal
Role Use Rights Included in Team Members Included in Select Applications Spectator View Results on Leaderboards (web, mobile, and TV screens) & chat with participants Fan Draft personal Fantasy Teams & Earn points, badges & trophies on team results Player Play/Compete in Game (earn points, badges, and trophies) & participate in Chat Game Manager Setup Games: Define game model, metrics, positions, & prizes Commissioner Oversee Games: Admin, role Management “Add-on”
Please note: Team Member Licenses will not contribute to the minimum user requirement. Internal users indirectly accessing Microsoft Dynamics 365 application data via a portal are required to have the appropriate Microsoft Dynamics 365 license.
