POWL hide / disable buttons Change / new query and personalization

Hi experts,

My client need to hide / disable buttons for adding and changing queries and personalization. They don't employees to change this configuration (please see printscreen attached, the buttons are on the top right corner).

http://screencast.com/t/uGYAu3x5UT

Is any way to do this through customizing?

Thanks in advance.

BEst,

AS