Apple LaserWriter 12/640 PS - Manual (Page 265)

3 Open the Printer’s Zone category.
A list of the EtherTalk zones appears.
4 Select the zone you want the printer to appear in.
5 Click Send to send the zone setting to the printer.
Changing TCP/IP configurations
You can specify the IP address of the printer. For information about
determining the printer’s IP address and setting up the printer on a TCP/IP
network, see Chapter 4.
1 Open the Communication Configuration category.
You see a list of communication settings options.
265 Setting the Printer Default Settings