[Atlas] On Demand Backup Typo / Clarification

Client has a user who would like to use an API call to generate on-demand snapshots. In discussing and reading the documentation there is a confusing sentence here: backup_doc

You must grant your API Key either the Project Owner role (sic) to successfully call this endpoint.

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But whatever option the “either” indicates is mysteriously not mentioned.(They would like to go with the option of least privilege.) Can we advise and revise accordingly? Thank you!