How to restrict or remove information from user's dashboard and Overview

We recently created a end user from admin account. We created the business view for this user and added only 1 device to this view, then linked to that user ("Only the selected Business Views" was selected)

The problem at the moment is, the admin have plenty devices and lots of different network traffic monitoring graphic (widget) on the Overview page. Both admin and end user goes to "Overview" as default Home page after login, and both of them got those monitoring graphic (widget) showing there. The only difference is that admin got all the real-time statistc and end user got "Result does not contain data from devices for which you have access" on all those graphics.

Anybody knows if there is a way to remove those monitoring graphic (widget) from end user's Overview page without affecting admin account? We do not want end user to see those information at all. While I am editing this, I just realized "Traffc Overview" page under Dashboard also show the same result for admin and end user.

I have tried so long but no luck yet. Any suggestion would be appriciated.