Is it possible to automate multiple tenants using Office365 activities, for the tenant which is used for registering apps? If yes, how?
With the concept of Multi-tenant applications, it is possible to use multiple tenants other than the original tenant to be used with Office365 activities.
However, for other tenants, the app is required to be approved and configured properly (e.g. make sure the tenant's security policy allows the app to work, see How To Convert App To Be Multi-Tenant Admin Consent documentation for example )
Once the setup is done, it should be possible to use the other app as usual ensuring to fill in the Tenant field of the Microsoft Office365 Scope activity.
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