I am afraid that you can't do that directly in the same chart (would like to see somebody proves me wrong). As a work around, you can create another chart with similar dimension and customize it's appearance(Ctrl+Shift) and place the dimension part at your desired position.
Tresesco, Have you converted the chart as a line chart and select the style as mentioned (pls refer the chart image) by Jelly Chen in this question. It looks like it is not working in the line chart > style as area. works in a combo chart
I cloned the same chart and kept it on top of the regular one and then just showing the dimension in the top chart brought a chart look similar to the chart image posted in the question. But this solution requires two chart and may not be advisable.