Final answer:
To add a total row to a table in Excel, use the 'Design' tab, found within the Table Tools, and check the 'Total Row' option.
Step-by-step explanation:
Users can add a total row to a table in Excel using the Design tab. When a table is selected, the Table Tools appear, and the Design tab is part of this set. To add a total row, you simply need to check the box labeled 'Total Row' within the Table Style Options group on the Design tab.
This will add a row at the bottom of the table where you can select different functions for each column, such as SUM, AVERAGE, COUNT, etc., to automatically calculate and display the total for that column.