Further explanation of what I am looking for:
The customer wants the report values displayed to the nearest to the nearest $1,000 with the hundredths displayed as one digit to the right of the decimal place in preview mode. This is a common format used in published financial statements.
For example, the group footer summary total field value 28,187,681.32 is currently displayed as 28,187,681 using the customize number format settings. The required display value is 28,187.7. However, the “round to the nearest thousand” display shall not apply to the group summary total field when the drilldown group level > 0. A formula such as “Round(Sum ({@nCPERAmt}, {@sAcctClass})/1000,1)“ used in the customize, rounding formula editor produces a “Bad Formula Result error.