1). No idea.

2). I don't use focus.

3). Do-Not-Pass function in Keyclone.

4).
/target [target=Maintoon, nodead] [target=toon2, nodead] [target=toon3, nodead] [target=toon4, nodead] [target=toon5, nodead]
/follow

5).
/assist [target=Maintoon, nodead] [target=toon2, nodead] [target=toon3, nodead] [target=toon4, nodead] [target=toon5, nodead]
/cast Spellname