timing false in one staff only?

[Damian leGassick]

Hi all

I want  a staffgroup with:

        *top is a reduction of some music

        *bottom is a line of  notes - like a series

I don't want the bottom staff to synchronize with the top (ie I want the notes 
to be evenly spaced, regardless of what's going on in the top staff)

I can get rid of the time signature, barlines etc no problem - i just can't get 
timing = false in the one staff

any ideas? 

tia

Damian