I am working with Graph Explorer to experiment with permissions:
https://developer.microsoft.com/en-us/graph/graph-explorer
When I authenticate to Graph Explorer, it always sends queries to the AD tenant that my identity is created in.
However, the identity I am using can query multiple Azure AD tenants.
How can I change default tenant in Graph Explorer
Create a service account in the tenant you want to access.
Users
-> New user
User Administrator
Get
the Get My Profile
to verify the service account logged in is found.