Manufacturers can be assigned to Products and can be used for Searching and Reporting.
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To get to this option you will need to go to the Menu: Setup > Products > Manufacturers

To create a new Manufacturer click

When creating the Product you will need to select the Manufacturer you have created and this will mean in the Order you can filter by the specific Manufacturer and get all the Products linked to that.

Here is an example of how it will look when creating a order -