in NWN 1 you could do it by assigining to "CONTROL" slot, or "SHIFT" slot.....or in the normal slot......i have been playing NWN 1 and all its expansion for 3 years now...

, am planning to buy NWN 2 next month....

, so it should be the same way...

,
for more info about nwn please visit
http://nwn2forums.bioware.com/forums/index.html
this is a dedicated forum for the beautiful game...

, have fun playing mate...me envy of you...