Combo Bar and Line Graph with Four Data Series

Hi All,

Very little experience with graphs so hopefully this should be an easy one...

With reference to the attached example, I have four data series that I want to present on a Combo chart. The first two series detail the number of units sold to two different customers. I want this data to be presented as a stacked bar on the graph. To give an example, if I have one customer who I've sold 10 units to, and a second customer that I've sold 100 units to, I want the bar to protrude from the x axis to the value of 110 (total units) on the y axis however, the bar shall be split into two sections; the first section will represent the lower of the number of units sold to each customers (in this case we sold ten units to customer A and 100 units to customer B so the first section of the chart shall protrude from the x axis up to the value of 10 on the y axis; the second section of the bar will begin at the value of 10 on the y axis and continue to the value of 110 on the y axis). Each section needs to be a different colour, ideally yellow and blue respectively.

The latter two data series detail revenue derived from the largest client, and total revenue in the same periods. I want revenue to show as a line.

Kindly provide instructions on how to do this because, as you've probably surmised, the attached isn't my real life example and I will need to replicate the process for my actual data.