changing staves

Hi folks,

Searched high and low for advice on this. Can't find what I need,

Doing a score (jazz lead sheet). First three lines will be Right and left hand piano (treble and bass clef) for the rest I would just like a single treble staff. Mainly to condense the number of pages and chord symbols will suffice for the balance of the chart.

Running the latest update 4.0.1 - on a macbook pro. There must be a simple solution I haven't found.

Thank you for your help

Kev