This simple step allows you to convert the date units of values in Date columns.
Select one or many date columns
Select the desired date unit.
There is no exact conversion from Week into Month, Year or Quarter since weeks do not necessarily start at the beginning of a Month, a Year, or a Quarter.
If you try converting units from Month, Year, or Quarter into a more granular unit – for example from Month to Day – Workbench will pick the first possible date values.