Finch requires MCC access to run an Audit report.
Finch can link to a client’s AdWords account by asking the client for their AdWords Customer ID number. We then submit an invitation to the client asking for permission to link to their account.
Each direct AdWords account can be linked to up to 5 MCCs, so there should normally be room for Finch.
Occasionally Finch invites the top MCC of a client. It is only possible to have one MCC link to a top account (i.e. another MCC account).
It is not technically possible for a client to invite Finch to access and manage their account.