There are already actions for "Get Microsoft CSP Customer", and "Link Microsoft CSP Customer" so a lot of the legwork is already there. But the final step of consenting to the delegated admin permissions still has to be done manually. Yes, there is a button that can consent to all linked customers, but there is no way to do this programmatically from a workflow. Please add an action that can accept the Customer ID from the integration (as "Get Microsoft CSP Customer" supplies it) as an input and then process the "consent to delegated admin permissions" step for that client.