nested conditions - how?

I apologize in advance for this post, I feel like the biggest idiot ever right now, but I can't find a way to add nested conditions into my rules.
I've updated from Hazel 2, the update seemed to have worked, as well, the version says 3.0 (build 765), I can see the 'is among the', sync and scheduling conditions/actions, I can drag conditions and actions, but I just can't find a way to add a nested condition.
Right click? No.
One of the options of a condition? No (or am I blind...?).
Drag it to the right? No.
OS is 10.7.3 Server.
I'm sorry to admit how dumb I am, but can someone explain to me how that works?
Thanks...
Oh, btw, my help file (yes, I tried that first) is still from Hazel 2 (at least it has a chapter "what's new in Hazel 2"). Can that have something to do with it?
I've updated from Hazel 2, the update seemed to have worked, as well, the version says 3.0 (build 765), I can see the 'is among the', sync and scheduling conditions/actions, I can drag conditions and actions, but I just can't find a way to add a nested condition.
Right click? No.
One of the options of a condition? No (or am I blind...?).
Drag it to the right? No.
OS is 10.7.3 Server.
I'm sorry to admit how dumb I am, but can someone explain to me how that works?

Thanks...
Oh, btw, my help file (yes, I tried that first) is still from Hazel 2 (at least it has a chapter "what's new in Hazel 2"). Can that have something to do with it?