UI question in gnucash2

[Howard Kim]

I finally made the plunge to v2.0.5 and installed it on my Powerbook (PowerPC) 
via Fink without a hitch.

I do have one interface question that I hope someone can help me out with.  In 
v1.8, I could set accounts to expand (show sub-accounts) when double-clicked.  I 
don't seem to be able to find that preference in v2.  Could someone point me in 
the right direction?

Many thanks.

~Howard