changing time signatures

[Bernard Hurley]

Hi all,

I am about to start typesetting a score with lots of changing time
signatures. I want to do the following:

1) In the conductor's score I want the time signatures to appear on an
invisible staff in the manner of time-signature-staff.ly from "Tips and
Tricks".
2) When extracting individual parts I want them to appear normally.
3) To avoid clutter I don't want to have to add the time signatures to
every part. In fact I would prefer to have a sort of "dummy part" that
just has time signatures that then can be applied to the individual
parts.

Any ideas?

Thanks,
Regards,

Bernard