I am looking for a dropshipping extension that can support these features.
Supports multiple shipping origins per single sales order. Shipping rates calculated based on each vendors’ ship-from location for accurate shipping rates and tracking.
Ship using live rates, flat rates, table rates, zone rates, small parcel, LTL, scheduled deliveries.
Optional automatic generation of shipping labels and packing slips attached to vendor order notifications. Alternatively, vendors can print shipping labels vendor portal or use their own.
Option for admin or vendor-defined flat shipping rates based on geographic ship-from and ship-to regions.
Admin supervision over all vendor actions with configurable vendor access.
Optional moderation of product data, seller to customer communication, and reviews.
Master Admin can generate the label and shipments with their own API credentials.
While generating the shipment over the Australia post we will refer order item by seller and create a common shipment based on the seller.
After generating shipment over Australia post you should have a shipment label based on each seller we would generate the shipment of the order and store each tracking id in each shipment.
Based on each shipment customers should able to see the tracking link of multiple items.
Sharing few of plugins which provide dropshipping but not sure that these will fulfil your requirement. You can contact to their support and ask them for a demo or if they can do customisation for you.
Have a look at the list of Magento 2 dropshipping extensions that will not only make things easier for you but will also take care of other operational aspects of all your dropshipping needs.
