Collapsing Group items in a report view

Collapsing Group items in a report view

I have a report grouped by purchase order number and beneath each PO I have the line entries for each order. 

I would like to have these collapsed so that they all fit on one screen and the operator can expand them if needed. Is that possible?

I would also like the customer name to appear on the header line, so it would have 

PO NUMBER     CUSTOMER 

in the tan header line and then the PO line items below it.