The following instructions outline the steps require to sort a single band in a report, this is performed on a 'per band' basis however the steps can then be repeated for additional bands.

1. Open your report, then select the Band you would like to Sort

2. Click the [>] icon to display the Detail Tasks

3. Click the ellipses (...) icon next to Sort Fields to display the GroupField Collection Editor window
4. Click the [Add] button

5. In the GroupField Properties section you can select a 'Field Name' and 'Sort Order'
6. Click [OK]