In Admin --> Contacts it is possible to define different contact information which can be assigned to the devices.

1) To assign contact information to a device go to View --> Counters.

2) Find your printer in the view and click on the magnifyingglass in the left side of the view to see detailed information abot the device.

3) Go to the Tab "Supplies" and in the buttom of the page in the section "Location/Contact" you can select a contact to be assigned to the device.

Here it is also possible to create new contact information if need.