Which field can be added to customize the Sales by Sales Rep Report across multiple time periods?

The correct choice for customizing the Sales by Sales Rep Report across multiple time periods is the "Amount (Gross)" field. This field provides essential information regarding the total sales generated by each sales representative, allowing for comprehensive analysis over various time periods. By including gross amounts, organizations can effectively evaluate the performance of their sales reps not just on individual transactions, but also in a broader context over selected time frames.

In the context of reporting, using the "Amount (Gross)" field enables comparisons of sales performance across different periods, tracking growth trends, and identifying seasonal variations that may impact sales. This granular financial data is crucial for strategic decision-making, sales forecasting, and identifying high-performing sales reps based on their revenue contributions.

While options such as "Sales Rep" and "Date Created" provide useful categorization and timing context, they do not contribute directly to the financial metrics necessary for evaluating sales performance over time. Similarly, "Date" could serve to filter the report by specific periods but lacks the quantitative data that the "Amount (Gross)" field offers for performance assessment. Therefore, focusing on the financial aspects represented by gross sales amounts is the best choice for this reporting scenario.