How to create Comparison across Period chart in a dashboard?

How to create Comparison across Period chart in a dashboard?

Hi all

How can I create this chart in a custom dashboard?


The issue for me is that this chart is very small. The CRM module (unlike Projects module) has no ability to expand a chart. I want to make it larger, but also want to include it in a custom Forecast dashboard I'm building. 

I can't see how to add a line to a chart, and I can't get the right grouping for the periods.