To see other legends on the plotted chart when users mouse hover on a particular point or on a particular bar then the user needs to select those legends in the “Other tooltips”.
In the below column chart if users hover on it then by default it shows the legends of Month (x-axis) and Total GMV (y-axis). By selecting other dimensions and measures in “Other Tooltips” they can see those Legends as well. In the below chart selected “Avg total line amount” in other tooltips.
To save the changes users need to click on Plot and then click on Save to save the changes.