Final answer:
To modify a sales report for a specific class, use the filter function instead of selecting from the Columns box. Filtering lets you specify criteria for your report, allowing you to display only the data relevant to the chosen class.
Step-by-step explanation:
To modify a sales report so that it only displays information related to one class, you typically have to filter the data rather than selecting Class from the Columns selection box. The Columns selection in a report often dictates which columns, or fields of data, will be displayed in the final report. To focus on one class, you would use the filter or query function to specifically request data associated with the desired class. This action narrows down the data in your report based on the criteria you set, which in this case would be the specific class you are interested in.
In software applications that handle reporting, such as Excel or various business intelligence tools, the process generally involves setting up a filter where you specify the column you want to filter by and then select the values that you want to include in the report. In this way, the software will generate a report that includes only rows that match your defined class.