Hi @Test788Lab
To set up OneDrive with SharePoint Server Subscription Edition or 2019, you can either use Group Policy or set the registry keys directly. Currently I have not found other documentations to describe whether there are other methods to meet this requirement.
For more information, you could refer to:
https://learn.microsoft.com/en-us/sharepoint/install/configure-syncing-with-the-onedrive-sync-app#configure-onedrive-for-sharepoint-server-subscription-edition-or-2019
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