Setup
From the Shipping Settings (Admin Control Panel -> Settings -> Listing Settings -> Auctions & Products -> Shipping Settings) menu:
Enable Shipping Module
If checked, enables the shipping module.
Additional customisable Admin Control Panel (Settings -> Listing Settings -> Auctions & Products -> Shipping Settings) sections:
Enable Pick-ups
If checked, allows sellers to enable the pick-up option for items.
Enable Returns
If checked, allows sellers to specify a returns policy for items.