Chart with multiple variables

Dear everyone,

I have a problem when i created a chart with many variable. I wanted to present in a bar chart which on the X-axis there are groups and in each group there are two different data. On the otherhands, I had other category name represent each data and I want to display those category names on the bar chat. Can anyone help me to deal with this. Currently I am doing mannually.

I attached with a sample workbook.

Kind Regards,
Sarin

Thank you Andy. It looks easy but I cannot think of it.