Member Junction
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    DEFAULT_EXCEL_ADDIN_ID: "AAEB4761-75CC-4DB1-99BD-7790FAD307C6" = 'AAEB4761-75CC-4DB1-99BD-7790FAD307C6'

    The add-in's identity in Office. Every MJ host serves the same add-in, so the default is one fixed GUID; a host that deploys a second, differently configured copy to the same Microsoft 365 tenant sets its own AddinId.