Click "Developer" from Excel's ribbon. Click "Insert" from the Controls group, and click the scroll bar icon. Click and drag over the chart to add a scroll bar.

To add bullets in an Excel graph or chart, you'll first need to use the program's Illustrations tool to insert a shape. You can then add text to the shape object and format it with bullet points.

This article explains how to add a secondary axis to a chart in Excel so you can view unlike categories on the same graph. These instructions work in Excel in Microsoft 365, Excel 2021, Excel 2019 ...