To setup a custom page size on Windows 10 go to Settings > Devices > Printer and scanners > Select the desired printer > click on"Printer server properties at related settings" > select "create a new form" and set a form name. Then, define form measurements. Click OK to save the new custom page.
Close and Run CMS IntelliCAD to reload Windows printer configurations. Setup printing with the new custom page/form size will now be available both at the PLOT, PRINT or at each layout setup by using PAGESETUP command.