If you are creating a Report layout with grouped data, you should think about how you want the report to look so you can more easily proceed through the
New Layout/Report assistant. The assistant asks you to specify the field or fields that you want to categorize (group) the data by. If you are including subtotals or grand totals, you should also think about which fields you want to summarize and define those summary fields before you begin the assistant. (If necessary, you can also define the summary fields within the assistant.)