How to have 2 labels on the graph?

[#1]

How can I display 2 labels on a graph? There are so many formatting options for the Y-axis variable labels, but if I added a categorical or numerical label as an overlay, color, size, interval on the right hand side. I cannot find any options to create a label for it, even if I mark it to label on its column and all rows on the table.

I hope I can do this automatically, because I have to do it so many time

[#2 · Accepted solution]

For example here I have two labels (age and sex) on scatterplot using Label column property and Label by Row 

[#3]

That works, thank you very much