Click on the Settings icon (the gear) located to the right side of the search bar. This will take you here:
In the horizontal navigation bar, select System and select Settings from the drop down options. This will take you here:
To make a setting inactive, click the button to the right of the desired setting that says ON.
If the button says OFF, click it to make the setting active.
After making a change, click Confirm Change from the pop-up window that appears.