Users with no access to revert revisions can do it

Hi .. great module ....

I'm using this module to create a workflow.. Somebody create something ... a new revision is created .. then an admin goes and review it a and if it is ok , published... and so on.. But still have a few problems .. A user with no permission can still revert and delete revisions??.... Also if the don't click new revision it goes publish and replace the publish version .. and no admi have review it??

How can i limit the permissions??
I have attached a print screen that may help.. (lea is the authenticated user.. not permisiions.. isadyao is an admin with all permisiions.

Any help would be really appreciated.