The easiest way I know how to do it is when you insert your chart, go to
custom types and scroll down to the one that says Line - Column on 2 axes,
and that one will give 2 scales for your y axis.

"Eric" wrote:

Does anyone have any suggestions on how to insert 2 scales on y-axis? one
scale on the left and the other scale on the right.
Thanks in advance for any suggestions
Eric