I wrote once software to do the time tracing in reverse. I feed it with projects and how much I thought I was working on each project, and in generated timetables with accuracy needed by company for the whole week that matched the given project percentages. As a bonus, I had a generic list of comments to attach randomly to each slot.
My manager was using those generated data to figure out the project time percentages I was working on. Circle closed. All happy.
My manager was using those generated data to figure out the project time percentages I was working on. Circle closed. All happy.