Active Location bar in second lister from button

Hi

Guys I am trying to set up a custom button to pull up dual listers and then active the location bar in the second lister that opens. I can see from the existing dual lister button what to type to bring up the second lister. But wanting what to write next to active the location bar could use the shortcut key F4 maybe but thought there maybe a built in keyword. Once active I want to fire a third party program quick jump that will let me search an index of paths and then populate the location bar with the one I select.

Any suggestions would be great.

Thanks Justin