CODEM does not provide exports for creating shops. This means you have to add each shop from the NGD configs into your codem shops.lua. Below is an example from ngd-vu for the ice maker.

    ["VU IceMaker"] = {
        label = "Ice Maker",
        job = 'all',
        items = {
            ["1"] = { name = "ngd_vuice", price = 0},
        },
        coords = vector3(-1117.2538, 2692.1638, 17.5542),
        Blip = {
            enable = false,
            id = 52,
            scale = 0.5,
            color = 5,
        },
      }

• The title ["VU IceMaker"] is the shop registered in the NGD script. Click below to see each shop name.
• The label is the label of the shop and can be whatever you want
• The job can still be 'all' since the NGD scripts restrict the shop with target
• The items are each of the items from the NGD script config
• The coords should be one of the boxzone coords from the NGD script related to the shop you are working on.