All the orders that have been created on the channels that are linked to your account, will appear under Sales & Returns > Staging Orders. Marketplace orders will not be converted into Business Central sales orders directly. This is a 2-step process. At first orders will be imported into the staging order area. As a next step, they can be processed to become real sales orders. This can be done manually or automatically. Also importing the orders is something that can be done either manually, by clicking on the Get New/Updated Orders button, or by activating the job queue entry (Codeunit 70796602 (Inbound Sync CENVN)).