To Clear All History at once:
- Go to the Settings icon and Select Settings.
- Select Show advanced settings...
- Under the 'Privacy' section select Clear Browsing Data.
- Set specifications as needed and hit Clear Browsing Data.
For Individual History:
- Go to the Settings icon in the upper righthand corner and Select History.
- Check each box next to the information you want deleted.
- Once you have selected all history that you want deleted, hit Remove selected items at the to and then OK in the confirmation prompt.