Hello Fernando Brochetto,
The idea of the request is clear, but there are some nuances and questions about your proposal.
Adding a new conversion to Calculator will not help, because you need different working logic for the row with grouping and the rows below it, and the conversion (like Calculator in general) works for the whole column in the same way. So the only option here is to modify the logic of the grouping itself and the method of displaying information in it. We can't change the format of the display in the grouping right away, because this will cause a wave of negativity from the other partners. Furthermore, it is necessary to change the format not only in the date and day grouping, but also in all other groupings. The way the same function works cannot be different.
So I would like to find out what exactly the request from your client is related to. Does this variant of data output affect the work with the report and its analysis? What exactly prevents you from having dates in these lines when analyzing workdays?
Besides, if the user makes additional processing of the report in Excel, in this case it is easy to bring the values into the required form by one formula without changing the logic on the Wialon side.
p.s.: I wrote in one of the threads that in the future we want to work on the logic of the Total line and groupings, and maybe we can consider this query as well, but we will definitely not work on this task separately and work out the options for its solution.
Business Analyst, Gurtam