Orders from SellerChamp supported channels can be fulfilled by Amazon using the Auto-fulfill orders via FBA option within the SellerChamp channel integrations. Basically, the orders from other supported marketplaces (apart from Amazon) can be sent to Amazon to be fulfilled.

This option will only appear when the Import From (source) marketplace is Amazon

Scroll down the settings page to view the additional options to complete settings up Auto-fulfill orders via FBA