I followed instructions how to disable users of using offline client to view/edit documents. So they have to use web app mode.
I created dummy group of two users whom I gave contribute permissions. In library settings I set that documents are opened in web app by default. But as soon as docs are opened in web app they still can click on option open in and switch to client version of excel or word.
Did I miss something or should I add something else so users can't use clients?