I need to build a Lines Graph like the image below:
My inquiry is that I'm not sure how to build two lines with the same metrics but different values. I have two tables, one for the Baseline and another for the Trendline. When I created the Baseline in tableau, I get a legend as "% Sales" instead of "Baseline". So I'm not sure how to control that behaviour.
Is there a way to define two different lines but with the same metrics?
In addition, the Baseline shouldn't be affected by the filters since it's just a Baseline for all periods and sales. Is that doable?
Thank you all for your supporting, if anything is not clear please let me know.