Graph Builder: reference line, different for each Y group

[#1]

Hello everybody,

I would like to know if it is possible to define separated reference lines on the X axis when we have Y groups.

Here is an example using the BigClass data table.

I can define two reference lines, but I would like to display the red one only on the top graph and the blue one on the bottom graph.

Here is what I get:

Here is what I would like to get:

Is there a way to do that without playing with the menu Customize > Script ...?

Thanks in advance!

[#2]

Graph Builder is designed to facilitate comparisons within and between groups. So, if you have multiple FrameBoxes from using grouping variables then, as you say, the x and y axes (and any reference lines associated with these) will always be common. So I believe the answer is 'no', not without resorting to JSL.

[#3]

Fortunately, it's less JSL than one might expect:

right click / customize / + / type: