It looks like you've got CloneKeys set up fine. I use the macros listed here in combination with an AddOn called Jamba. Once you get the hang of things, you might like the levelling guide in the sticky here . At the beginning of my WoW session, I hit the keys to set the main characters as my focus, and to follow her. (For me, Shift+O is focus, and Shift+F is set to follow). All the spell macros for the secondary toon look something like
Code:
#showtooltip
/cast [target=focustarget] Lightning Bolt
I have that bound to key 1. Then on the leading toon, shadow bolt is on key 1 and when I press "1", CloneKeys broadcasts that over the secondary toon and they'll cast Lightning Bolt and Shadow Bolt at the same time.