Hi everybody.
Thanks a lot for your valuable help =).
In fact, I was opened a case with CA Support and Engineer who helped me recommended to me create a subpage and section and there create a process in GEL/XOG code to consult at user added in 'Reviewers' attribute and then through GEL/XOG script insert dynamically desired permission, but I don't know what is better way to do this procedure.
But also I'll be reviewing information you sent for this theme. If a question arises I'll be updating again.
Thank you so much to all answered this question.
Best Regards, Daniel =).