A family of Microsoft relational database management systems designed for ease of use.
When you have the report open in Design View, press the Grouping and Sorting icon on the ribbon, this will open the Grouping and Sorting pane where you can add groups and sorts. So what you need is to create a Grouping on CustomerID. Then move all the Customer info into the Group Header. Just leave Order info in the Detail band. Add a Group Footer and set the Footer to force a new page after.
The group header will show the Customer info. The Detail will show the orders for that customer.
This is very standard stuff, btw.