Unfortunately, there is no method to properly scale an inset PostScript figure from within EZ. You can, however, set the area that should be allocated on the page for the PostScript image. To do this, you use the Set Pixel Size or Set Inch Size command from the PostScript menu card (this menu card only comes up when you have placed the cursor over the object and clicked the mouse to activate it). With these commands, you specify how many inches or pixels (at 72 dots per inch) should be allocated for the image.
Note that the PostScript insets should be located in the lower left hand corner of the page when you print them out -- otherwise EZ gets confused and doesn't know where they are. Also the previewer doesn't display them.