Multiple "Detail" bands is not possible. You can add "Group Bands" before and after the Detail band though.
UPDATE
For the upper part of the report:
- The Detail Band is the one with the Product Line, Name, Amount ... etc.
- The Group surrounding the Detail, containing the Branch is one level upper group.
- The Group surrounding the Branch Group is the State Bang, its the top level.
First make two groups, call one of them "State" and the other "Branch", When writing your query make sure you order the results by State, then Branch. If you do that, Jasper will make sure to group the results exactly as in the snapshot.
Check this snapshot, you should make the report something like this: