You can specify on which days of the week a PM is active. Work orders are generated from PMs only on the specified active days.
An extended date on the PM overrides seasonal dates. If the extended date on a PM changes the due date to one that is outside the active season, you can generate work orders from that PM.
If the PM is associated with a master PM, updates to the master PM record overwrite changes you make to the seasonal dates on the associated PM when you update existing PMs. To prevent updates by the master PM, select the Override Updates from Master PM check box on the PM tab.