You can hide all the other dashparts from view while keeping the current dashpart that you are using visible on the dashboard. You may want to this in cases where you need to focus on the information displayed on a dashpart. The hidden dashparts are then added to the Hidden Dashparts dialog box.
To hide all other dashparts:
Select the dashpart that you want to keep visible on the dashboard. How?
On the dashpart title bar, click the name of the dashpart.
On the drop-down menu, click Hide All Others.
Learn about the Dashboard toolbar
Display hidden dashparts on your dashboard
Configure access control to dashparts