Question allowing of only certian items users can sell (like their own items)

Walmart

Customer
Hey, so i set up shop & credit's. I am working on a market place where users sell their own items (gfx/scripts/ads/etc,) i am trying to configure the shop to only allow members to sell their own items. but am confused on how to do so.
 

DragonByte Shop

XenForo 1.5.3+ XenForo 2.0.x XenForo 2.1.x XenForo 2.2.x
Seller
DragonByte Technologies
Release date
Last update
Total downloads
2,852
Customer rating
5.00 star(s) 3 ratings
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