Here we have data about cash level in a bank account. Then we have defined high and low limit for good liquidity. The value of cash account should not fall below low limit and should not exceed high limit.
Just note, as we use stacked areas, the upper limit will be 100 + 500, not 500. If you would like the high limit to be 500, change the cell C2 to 400. Our low limit is 100 and high limit is 600.

We need to have a graph to show if our cash balance is in between the limits. Then we can visually follow the cash balance and limits.

Let’s start creating the graph.
Activate the area, select insert – chart, choose combo.

For the low limit, select stacked area. That is the area chart in the middle.

Select also the chart type for high limit for stacked area.
The graph looks like this. It is not yet presentable. Check that both limits have chart type stacked area.

Activate the lower area, press right mouse button and press fill.

Select no fill, as we want the area to be transparent. Only the area between the limits is colored.

This looks already better, but it needs still some finetuning. The background is too dark.

Press right mouse button, select fill and choose a lighter color.
For me, a light background color looks better.

We could still make background color less striking.
Press right mouse button on top of the background, press fill, select gradient and more gradients.

I set transparency for 80 %.

Now the graph looks even better.

I removed the labels for high and low limits.
We can see visually that cash dropped twice during the period considered below the low limit. The cash line is not in the light-yellow area. Both times cash was just below the limit.
Now we are ready for the management meeting to present cash profile.