Is it possible to use a custom calculated field to return as a date +/- days from another date field? Or even +/- the Planned Completion/Start Date(s)?

Hi Lila,

Yes, you can, using DATEDIFF, WEEKDAYDIFF, WORKMINUTESDIFF (see here for details), but since by nature such date calculations tend to get stale over time, you might also instead consider a dynamic grouping, such as this:

group.0.valueexpression=IF(DATEDIFF({actualCompletionDate},{actualStartDate})<2,"0-2",IF(DATEDIFF({actualCompletionDate},{actualStartDate})<5,"3-5",IF(DATEDIFF({actualCompletionDate},{actualStartDate})<10, "6-10","10+")))

Regards,

Doug