Jonathan,
If I understand you correctly, you have a plan with a payrate structure
that is currently set for a particular value for each resource in year
1. Each successive year the payrate increases by a certain percentage.
You would like to be able to go in to any given year for any resource
and change the payrate and then be able to see the reflected change in
all other years - correct?
My first though was to apply a formula to the payrate fields but I don't
think that is possible with current versions of Project (if I'm wrong,
maybe someone can enlighten us both). My second thought is to capture
the year one payrate for each resource in a spare resource field (e.g.
Number or Text) for reference. Then write a macro that queries the
current payrate with the reference and if a change is detected,
re-adjust the payrate of all other years to reflect the change. This may
seem a little complex but the macro should really be quite simple and
straightforward.
John