Greying out Pushbuttons in MM01

Hi Folks,

Please let me know how can I grey out the pushbuttons in standard SAP transactions.like I wan to grey out the ADDITIONALS (pushbutton ) of Basic data view 2 in MM01.

when i checked SDN lot of posts reg greying out fields but not for pushbuttons.

Please throw some light on this.

Thanks,

Shwetha