Left-click on the Firefox icon on your desktop and hold the mouse button. Drag the icon to the Start menu, which opens automatically when you hover your mouse over it.

You can add icons to your desktop in Windows 10 and more easily access the system apps or folders you regularly use. Here's how to do it.

You can create a desktop shortcut to a specific profile in Firefox using this tutorial. Open two Firefox profiles open at the same time using this guide.