Open Site box checked - as default

Our company would like the "Open Sites Only" checkbox to be checked by default when operators create any document and need to add a site from the Customer Header > Customer Information > Ship To > Site Search (please see the screenshot for reference). Could you assist in determining how to set this checkbox to be always checked by default? This change would significantly save time for our operators when creating documents in SRM, as they wouldn't need to manually check the box each time. Currently, this step often causes frustration for both operators and our accounts team. Your help would be greatly appreciated!

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