A. From the Services & add-ins settings in the Microsoft 365 admin center, set Let group members outside the organization access group content to

B. From the Guest access settings in the Microsoft Teams admin center, set Allow guest access in Microsoft Teams to On.

C. From the External collaboration settings in the Azure Active Directory admin center, add Contoso's domain to the list of target domains.

D. From the External access settings in the Microsoft Teams admin center, add Contoso's domain to the Allowed list of domains.

E. From the External collaboration settings in the Azure Active Directory admin center, set Guest users permissions are limited to No.

F. From the Services & add-ins settings in the Microsoft 365 admin center, set Let group owners add people outside the organization to groups to On.