I've gone further with the advanced Tableau Course, and now my dashboard for the project is almost ready. The guys have helped to better put it together, and now hopefully is clear enough so I can start writing the conclusions. I only need the ranking visualization to chuck on the dashboard and that's it. I'll use sets and parameters to better control the dashboard; the sizes are well and good. Hopefully, I'll be able to visualize it on the tablet format too. Two Pomodori added to the tally.