ACE ITEM CRAFTING MODIFICATION.

So I found this script that allows some pretty sweet item crafting. it's pretty much everything I've asked for, except for one thing, I want the ability to craft things to be limited to specialized shops, and not on the fly. Is there a way to limit or alter the code to only allow crafting to occur at specific locations as defined by me?

http://mrbubblewand.wordpress.com/rgss3/tactics-ogre-psp-crafting-system/