Custom Button in Report

Custom Button in Report

Hy ,

I have some questions , how to implement them :-
1. wane create custom button in report from through which able to change Status (lookup field) .but if it changes once and click again on status then its shows popup message cant change it again .
2.wane make search module for all categories in report .(see image 1.png).
 
I'm making this Application  in ZC5.