Replace the plans this one stands down.
Maintenance
Replace the plans this one stands down.
A yearly service already does everything the monthly round does, so the month that gets the yearly should not also get the monthly. The monthly is still recorded for that month, marked as covered by the yearly, and it does not count against PM compliance.
Each entry may say how close counts. Left empty it is the calendar month, which is what most pairs mean; a number is that many days either side of the covering round, which is what to use when even spacing matters or when the covered plan comes round more often than monthly.

