Group-Policy-and-Add-Ins
https://docs.microsoft.com/en-us/office365/troubleshoot/group-policy/office-add-in-not-loaded https://getadmx.com/?Category=Office2016&Policy=excel16.Office.Microsoft.Policies.Windows::L_ListOfManagedAddins https://superuser.com/questions/1165927/excel-activate-addin-through-a-group-policy-object