Hi Ann,
Right click the formula and apply Aggregation as Sum. It will automatically creates sum at each break level. No need to write any formula for that.
Follow below steps
- Create a new vertical table with Business Unit, Operating Company, KPI
- apply break ob BU
- Right click KPI and select the option insert SUM (Σ --> Sum)
- This will add sub totals at the break level and Grand total at the bottom. If you want you can delete the grand total alone