CDE for Solaris supports multi-headed systems, or multiple screens on the same workstation. This effectively adds space to your CDE desktop. By default, each screen on your system has its own Front Panel.
Each Front Panel is handled separately by CDE, so changes made to one Front Panel will not affect others. See "Miscellaneous Configurations" and "Advanced Front Panel Configuration" in Solaris Common Desktop Environment: Advanced User's and System Administrator's Guide.