- Table with date field let’s call it DueDate
- computed field week (WEEK(DueDate)) or month (MONTH(DueDate))
- group by computed week or month field
- adding of record is not possible (If you group by computed field you can not add a record."
There are many important use-cases where a grouping by a computed field is necessary and adding records in those views is important - even if it would be just “completely new record on top”