Allow specific user to invite guest users into a specific Teams

[Steve_Roh]

Hi all, 

Actually when a user wants to add a guest user into a Teams, he has to ask an IT-colleague to invite this external user to our tenant first.

For a specific Teams (Crisis management), in case of emergency, a particular user should be able to invite himself guest users into this teams, without having to add him into the tenant as prerequisite.

Do you know if this scenario is possible ? If yes, what do we have to configure in Teams/Tenant administration ?

Thanks for your help & Regards, 

Steve

[#2 · Accepted solution]

Hi @Steve_Roh,

to control who within your organization can invite guests, you can use the Guest inviter role:

1. Create a security group for guest inviter users:

   • Sign in to the Microsoft Teams admin center using a Global Administrator or Security Administrator account.
   • Navigate to Groups and select All groups.
   • Create a new Security group.
   • Provide a name and optional description.
   • Ensure the group can have roles assigned.
   • Add owners and members to the group.
   • Assign the Guest inviter role to the group under Roles.
   • Confirm the creation of the group.
     
     

2. Configure external collaboration settings:

   • After setting up the security group, adjust the external collaboration settings to allow only users with the Guest inviter role to invite guests.
   • Note that Global Administrators retain the ability to invite guests regardless of these settings.
   • In the Teams admin center, navigate to External identities and select External collaboration settings.
   • Choose the option to restrict guest invites to specific admin roles.
   • Save your changes.

Limit who can invite guests | Microsoft Learn

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