Yes, best you use the Facade Wizard to create the rules for this.
If you just want to use your specific pictures and do a simple mapping of facades, you'd need to create the 'mapping intelligence' in CGA. I am currently working on an easy to use rule set which does just that, but it's not yet ready for public release. may take some more time.
For now, try the Facade Wizard, ok ? 🙂
Let me know if you have any more questions !