Hi,
A previous post touched on this topic: https://community.jmp.com/t5/Discussions/Repeat-legend-with-every-page/td-p/47575
However, I tried using the hidden "By" variable in Graph Builder using well-plate data but I wasn't happy with the way it looked (see image below):
Somehow, the wells weren't filled-in anymore. However, I was able to get there by dragging my Cell Name column into Map Shape, my data column into Color, and then saving the script to a script window and manually adding the By variable (see below).
Graph Builder(
Variables( Color( :Data ), Shape( :Cell Name ) ),
Elements( Map Shapes( Legend( 3 ) ) ),
By( :Plate )
);
Please try that out and see if it works for you.