Where are those limits stored? In the same table as measurement results with each group having their own limit? Different specification table? In some other data structure?
I assume they are stored in the same table in their own columns.
You can do something like this fairly easily in graph builder by disabling/enabling correct variables (columns) for two separate plots while having the value + limit columns in Y-axis
If you were to move groups to X-group instead of X-axis you can get this
or you can move the X Group edge to bottom
-Jarmo