Bins are an integral part of the Store. They denote the specific location inside a building where your parts or equipment should be. We recommend not only having a good simple naming convention for the Bins, but also printing barcodes so you can scan them quickly with a Mobile device and Kiosk.
To add your own bins however, you need to go to EAM (eam.cern.ch link here).
Go to Materials > Setup > Stores and select the store you want to add the bin to. Then, navigate to the Bins Tab.
Put the code of the Bin under the Bin field and its description, up to a maximum of 80 characters. Make sure that the "For Stock" checkbox is checked.
In case you want to delete a Bin, it's enough to put it as Out of Service and it won't show in any search field again.