It's very overwhelming at first, but it is something that you just have to learn over time! There should also be a list on workbench, but I found you just have to give it time to let it all sink in. You can also scan a product with a mydevice, click the product name where it takes you to see backroom locations and if you scroll down it will tell you who the vendor is. I asked my wine and beer vendors to give me lists of the brands they carry so I would know who to contact or hold responsible for issues to report on the vendor survey or for salesplanners. Feel free to ask me any questions. Welcome to the CTL world, it's pretty great!