I suspect this is really easy, but I'm stumped. I'm trying look at historical trends for a category and three of it's major brands. I can't seem to get the two dimensions (Country & Brand) to work at the same time. I've tried a duel axis, which wouldn't work. I've tried to make a set of the brands that I want, but it totaled them together. I was thinking I could create a sum of all the brands and use that with the top three instead of the Country dimension, but couldn't figure it out. Any suggestions would be appreciated.
Unfortunately I cannot open your workbook (have only Tableau Public on this computer) but maybe using Combined field will solve your problem? Ctrl-click on both measures > right click > create > combined field. Then use this new field on rows/columns whichever fits.