A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
The formal name of the "slider" control is "scroll bar." To be able to insert a scroll bar, you must first turn on the hidden Developer tab of the Ribbon. To turn on the hidden Developer tab of the Ribbon, go to the Excel menu and choose Preferences. In the View preferences, click the box for In the Ribbon Show > Developer Tab.
Now click on the Developer tab, click on the Scroll Box control and drag across a worksheet to add your slider control. Right-click on the control and choose Format Control to set its properties.