Final answer:
In Microsoft Access, to open the Group, Sort, and Total pane, navigate to the Design menu while in the Design View of the report. Then click on the option in the Grouping & Totals group to show the pane.
Step-by-step explanation:
To open the Group, Sort, and Total pane in the bottom of the report window in Microsoft Access, you need to go to the Design menu. Once you're in the Design View of your report, locate the Grouping & Totals group. Here you will see an option to open the Group, Sort, and Total pane. Clicking this will reveal or bring up the pane at the bottom of the report window where you can define grouping and sorting options for your report data.