I want to program NEC SV9100" call restriction override" while i am using speed dial in telephone book and system speed dial.

I have blocked some extensions from calling outside, but the same time they want to use their telephone book to call out side with out any restriction.
even though the extensions are barred from calling out side , they should be able to call the numbers which they stored their telephone book.
I have tried but it is not happened. please guide me to solve the issue.
thanks in advance.