» Sun Jun 17, 2012 8:30 pm
This (what Cipscis said) works.
Simply click the top menu bar "Character" button, then choose "Actor Values...", from there if you highlight a skill, somewhere in the dialogue on the right there will be a button called "Perk Tree".
That being said, only the skills that already have perk trees can have their perk trees edited. So, were someone to add an entirely new skill on top of the existing ones, it could never have a perk tree.