I'm sorry.. The steps are supposed to be:
Options -> Advanced Options -> Applications -> Choose the app -> Hover over the app -> Click your BB Button -> Edit Permissions.
Like I had said though, this is on a 8830 World Edition. Running relatively OLD software compared to your spiffy storm.. :P
I don't have my storm anymore so I can't tell you exactly what is like, but on my 8830 I can edit http or apn access etc. Hopefully someone else with a storm can help yah out, my 8830 can only go as far as RIM lets it.
I just found another one - maybe this will help you out..:
Options -> Security Options -> Application Permitions -> Hover over a specific app -> Click your BB Button -> Edit Permissions -> BB Button -> Expand -> Change Desired Permission.
I hope it helps!
EDIT: This is pretty off-topic though, if you need any more help - please PM me..