Thank you for posting your question and supplying a workbook. I reviewed the workbook but I couldn't tell where things are hung up. The question in the post above is pretty specific to a time period of a week vs the .twbx showing total days worked per vessel name by quarter and FSE discipline. Could you provide a few more details about what information the viz should provide and if there are to be date selections of some sort in the view. I ask because some solutions will depend on datediff() values and may not work if dates are being filtered from the view.