I feel your pain. I gave up on most of the Antares plugins. The Harmony EVO was first to go. Too complicated and anemic documentation. I could never find the nodes or automation lanes you refer to, so I just gave up.
 
Nectar 2 is apparently much easier to use, according to testimony on these forums. It has a free, limited trial.
 
EDIT: Changed unlimited trial to limited trial. OOPS!

Thanks Ricebug. I am not quite ready to give up on HE just yet as I think it works really well, just wish I could get the hang of the automation. I also use it with MIDI tracks to generate the harmonies but I like the spread and register options that the chord mode allows. 
 
Nectar 2 does look nice and a lot easier than HE too. I will definitely try the free trial. Also, as I have Nectar Elements I could upgrade for around 120 uk pounds. It's tempting :)
 
Thanks

Cool. BTW, that's supposed to be LIMITED (10-day) trial, not unlimited. I fixed it.

Ah yes, I just assumed you meant that the trial was unlimited (but only for 10 days) rather than cut down if you get my drift.
 
Cheers