Microsoft Edge lets you pin sites to the Taskbar each with their own icon for quick access to tabs for your pinned sites. These pinned sites will always open in Microsoft Edge.
Starting with Microsoft Edge Insider Build 85.0.561.0 or higher (Canary or Dev Channel), clicking a pinned site on the Taskbar will now show you all of the open tabs for that site across any of your Microsoft Edge windows, just like you would expect for any app with multiple open windows. Since this is an early preview, existing sites on your Taskbar will not experience this new behavior until you remove (unpin) and re-pin them.
This tutorial will show you how to pin and unpin sites on the taskbar in the Chromium based Microsoft Edge.