How to set the default screen header structure of PA30?

Hi,

I am not talking about the screen header of a particular infotype, e.g. IT0002. I have managed to change the header for any infotype by changing the structure of relevant screen header modifier.

The question is, how to change the screen header at the initial screen of PA30?

Because all settings in table V_582A_B are with an infotype number. No idea about how to change the default sreen header.

thanks in advance.