Hello julie, I picked up your suggestion, I have now set up with a single project-layer.
I wanted to ask you one last thing: with the method you suggested, is it possible to see not the worked hours but, for each resource, the ratio of the worked hours on a project and the total working time actually carried out in a month? For example, resource 1 works 75h for project 1 and 25h for project 2, the rest of the month is non working time: I would like show that in the month resource 1 spends 0.75 of working time for project 1 and 0.25 for project 2. I could do it in excel, I wonder if it is possible to do it automatically in Project