Not a stupid question at all! There are many graph types that we may not have a built-in command, but you can use the existing commands, along with some calculations to built a template. For this graph type, we don’t have a built-in command, but we added a template to illustrate how you could build this for a simple example.
The example file compares the same data using a standard area graph using a Bars command, offset bars using Bar commands, and smooth lines using Plot commands.
See File > On-line examples, and this will be the most recent file uploaded.