Mass Upload Deliver-To Locations to a Punchout Content Zone

Summary: We have more than 1000 Locations that we need to specify for restrictions on a Content Zone for a Punchout. Currently, there is no option to add it in bulk and rather we have to Search and Select and add it one by one. How do we add data in bulk in this setup? This was a feature that was introduced as part of the Redwood Self-Service Procurement.

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We need to create a Punchout to a specific Supplier and that Punchout must only be available for specific Locations. This restriction is possible through the Redwood Self-Service Procurement feature of 'Securing by Deliver-To Location', however, there is no option to add the locations in bulk. We need to restrict this for more than 1000 locations, how do we achieve this without having to select and add each locations one by one?