If you would like to execute a command or launch an application upon FWCalendar completing either a monthly or yearly calendar, then set the LaunchM (to execute a command after completing a monthly calendar) or LaunchY (to execute a command after completing a full-year calendar) variable. You'll want to have an understanding of ARexx to do this, since the LaunchM/LaunchY variable is simply INTERPRETed. Some possibilities might be:

For Final Writer or PageStream, for use with LaunchM only:

Start FWCAddEvent:   LaunchM = 'call "'scriptdir'FWCAddEvent.rexx"'

For Final Writer or PageStream, can be used with LaunchM or LaunchY:

Delete temporary files:   LaunchM = 'address command "delete >NIL: "Storage" all force quiet"'

For Final Writer, can be used with LaunchM or LaunchY:

Save the calendar:   LaunchM = 'SAVE'

Import an image:   LaunchM = 'INSERT GRAPHIC'

For PageStream, can be used with LaunchM or LaunchY:

Save the calendar:   LaunchM = 'SAVEDOCUMENT DEFAULT'

Import an image:   LaunchM = 'PLACEGRAPHIC'

Save as a graphic:   LaunchM = 'SELECTOBJECT ALL; GROUP; EXPORTGRAPHIC'