You can use extension https://store.webkul.com/Magento-Multi-Vendor-DropShipping.html
For such functionality, you can check the Webkul Magento Multi-Vendor DropShipping module
Hope it helps!
if issue solved, Click Kudos & Accept it as Solution.
The business method you are referring to is relevant to the dropshipping method. As I know, webkul also provides this kind of extension. You can directly contact them to integrate this add-on into your marketplace.
For other suggestions, you can take a quick tour at this post: Top Best Magento 2 Dropship Extension.
Hope it useful for you!