How to create dynamic groups in Azure Active Directory B2B collaboration?

Steps to create a dynamic group with all users.

1. Sign in to the Microsoft Entra admin center as at least a User Administrator.
2. Browse to Identity > Groups > All groups , and select New group .
3. On the New Group page, under Group type, select Security . Enter a Group name and Group description for the new group.
4. Under Membership type, select Dynamic User , and then select Add dynamic query .
5. Above the Rule syntax text box, select Edit . On the Edit rule syntax page, type the following expression in the text box:

user.objectId -ne null	

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6. Select OK .
7. Select Save . The new dynamic group will now include B2B guest users and member users.
8. Select Create on the New group page to create the group.

If you want to include only members from your tenant but exclude the guest users, follow the same steps as mentioned above, but in the rule syntax box, enter the following expression:

(user.objectId -ne null) and (user.userType -eq "Member")
    

To include only guest users in the group, follow the same steps as mentioned above, but in the rule syntax box, enter the following expression:

(user.objectId -ne null) and (user.userType -eq "Guest")
    

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