Multi Vendor DropShipping - Manage Supplier Shipping Methods
First step is to configure your shipping methods going to System → Configuration, and then SALES → Shipping Methods.
There, you will find "MultiShipping" section where different supplier Shipping Methods can be enabled.
Manage Shipping Methods (Vendor Panel)
Suppliers can define their own shipping methods by clicking on 'Shipment Methods', under Settings, on the Supplier Panel.
When managing the shipping list, the supplier can modify an existent method, remove it or add a new one.
The suppliers can choose from Flat Rate, Table Rate or Free Shipping options. Flat Rate and Table Rate require a handling fee.
If suppliers choose the Table Rate option, they will have to upload the CSV file, like it is used in Magento table rates, so that shipping costs can be calculated automatically.
If no choice is made by the supplier, the shipping rate will be set as the default shipping rate.
Manage Shipping Methods (Admin Panel)
Admin has access to manage Supplier Shipping Methods when editing a specific supplier profile, under "Shipping Costs" tab.