I have a bunch of different line graphs showing different plots.

What I want to do, is be able to use a min and max on the Y axis that will
create an area through which the plots go through.

However, I want this area to be highlighted in some way to show that the
points in this highlighted part are acceptable, and the others are outside
the limits.

I don't want to manually change the limits of the graph because I want the
outside points showing.

Not sure how else to explain it.

Is this even possible in Excel? Any help would be appreciated.

TIA