I want to restrict all the users including administrator or moderator from changing anything in the admin panel in my site. Because I want to show some demo in a public place and for this reason I have to share administrator credentials to the public. But I want to restrict all the users including administrator or moderator from changing anything in the admin panel. They should just view all of things but don't change anything. I want when they change anything in the admin panel and then click on "save options" then a pop-up will come and that pop-up should say "You can't change anything in the demo version".
