The problem with the standard roles/permissions lists supplied with PeopleTools is that they get overwritten during a PeopleTools upgrade. So it really isn’t wise to modify the supplied definitions. Clone them and give those to your users if you really must modify them. It might **seem** the quicker method to modify the supplied definitions but you will probably pay for it in the end 🙂
Even if you don’t modify them always be aware that Oracle may add or remove permissions so a quick compare of the permissions after a PeopleTools upgrade/patch is well worth the effort.