Update share-model-driven-app.md

Adding additional details to the licensing prerequisite for guests accessing apps. (The license must be in the tenant hosting the app.)

Author: alaug

powerapps-docs/maker/model-driven-apps/share-model-driven-app.md

@@ -35,7 +35,7 @@ There are a few key environment and licensing prerequisites required when sharin
 - A Microsoft 365 user with Power Platform administrator rights or global admin rights must exist within the organization. [Learn how to assign Power Platform Administrator rights](/power-platform/admin/use-service-admin-role-manage-tenant).  This provides the user with administrator rights over all environments.
 - The app sharer must have admin privileges to the specific environment (or be a Power Platform administrator). The app sharer must have a [security role](/power-platform/admin/security-roles-privileges) with equal or greater privileges than the security role they're assigning to the app and to other users. Usually, this takes the form of the app sharer having the Dataverse **System Administrator** or **System Customizer** security role.  These roles can be assigned by Power Platform administrators (who have rights over all Dataverse environments). The system administrator and system customizer security roles are standard roles that exist within all Dataverse environments.
 - The user must exist as a user within the environment. It isn't enough to only be a Microsoft 365 user. This is because all users in an environment are accounted for and described within tables in the environment. [Learn how to add a user to an environment](/power-platform/admin/add-users-to-environment)
-- The user must have the correct [license](/power-platform/admin/pricing-billing-skus) to be able to use the app. This may be assigned through a per app plan pass, a per user license, or a pay as you go license.
+- The user must have the correct [license](/power-platform/admin/pricing-billing-skus) to be able to use the app. This may be assigned through a per app plan pass, a per user license, or a pay as you go license. Also, the license must be assigned in the tenant hosting the app. The exception to this prerequisite is when an app is hosted in a Microsoft Dataverse for Teams environment.
 
 ## Model-driven app sharing basics