Crystal Report where the maximum time of one process will be subtracted from the following processes minimum time.

The issue I face is that there is multiple endtimes and multiple start times for each job operation (SHR, PUN etc). I was thinking something like this?

global datetimevar great;

great := Maximum ({TimecardLines.lmlActualEndTime}, {JobOperations.jmoProcessID});

global datetimevar least;

next({JobOperations.jmoProcessID});

least := minimum({TimecardLines.lmlActualstartTime}, {JobOperations.jmoProcessID});

global timevar getterdone;

least - great

but that still isn't going to the next Pun.