Thanks Dan
Yes, right-click and Row Legend work "without" using CTRL key.
you are right, row legend feature only work for single plot.
if I have 10 plots, each plot need add row legend, I have to do it 10 times.
in fact, if I press and hold the CTRL key then click right-button, the menu can not pop-up.
without CTRL key then click right-button, menu can pop-up.
one interest thing is CTRL+right-click is work for red-down-triangle
(please see below green part)
btw, how to send my problem to JMP technical support?
thanks