You will find a Carriers panel in the Properties column (right handside) in Store Commander's interface.
This is where you can associate/dissociate products and carriers.
To associate or dissociate, tick the corresponding boxes in the 'Active' column.
Alternatively, you can use the mass-association and mass-dissociation icons on the toolbar once you have selected the carriers in the list.
Please note that we have also added a color code for a quick and easy visual identification:
Light grey: carrier not used by any of the selected products
Dark grey: carrier used by at least one of the selected products
Purple: carrier used by all the selected products