Link notes from one stave in another as a reference
Not sure of the proper name for this, but I'd like to include notes from one staff on one or more other staffs as a reference. I've seen this on scores where the reference notes are shown using a smaller scale and/or in grey to distinguish a clear difference. I would use this where multiple measures of rests exist in a part to help that player follow the score more reliably.
Also, if the source notes could be linked to other staffs so changes in the source automatically appear in the other staffs that would be very helpful.
This may be a current feature but I can't find it. Knowing what to call it would be a start!