I'm trying to do something seems simple, but dunno how to.
I would liken to create simple timesheet report by week Here is an example of what I want to do 
But I don't know how to filtering by row (project or employee) AND grouping/summing by column (week number). I tried with filter, query, {range1\ range2} etc.
The expected resultats are in green on the sheet. It can be one formula for all datas or one formula by cell, it's not a problem for me
Google sheet doc example : https://docs.google.com/spreadsheets/d/14H8GgMCWCDXuHm5q34Nz1kxUR12NO3tQqOeQeOOjaDY/edit?usp=sharing
Thanks a lot for all the time you will spend to help me :)
Best regards
