Hi,
 
	I downloaded a couple of overlays for retro arch but at a loss on how to install them.   I would like to use the same overlay per system.  For example I have a Amstrad CPC overlay and a ZX spectrum overlay.  So for all Amstrad games I would like it to load the Amstrad overly and all Spectrum games to use the spectrum overlay - Is it possible to configure retro arch to achieve this?
 
	Many thanks