You can decide if users can access media management and media optimization options from the control panel.
You find these options on the control panel when you touch .
Open the Settings Editor and go to: .
 
Use the [Media management via control panel] option to enable or disable media management on control panel.
When enabled users can use the [New] and [Copy] buttons.
Use the [Media optimization via control panel] option to enable or disable users access the media optimization options from the control panel.
When enabled users can use the [Optimize] button.