The Select Faces On Cube is a one click plugin that help you to create a polygon selection tags on the parametric cube for the faces and the edges. You know that if you want a polygon selection tag on a parametric cube you need to make it editable first and after you need to make a manual selection, create the selection tag and copy that on the original cube. And if you want to change some polygon subdivision, add fillet or change the fillet subdivision you need to repeat all the passes.

Now, with Select Faces On Cube, you need only to select the cubes you need the tags on and click one button. If you make some modification on the polygon cube configuration just click again on the plugin button.