To allow websites to show pop-up windows in Microsoft Edge, you have to disable the browser's pop-up blocker. Here's how you do that on desktop and mobile. Why Disable the Pop-Up Blocker in Edge?

To add or remove Sidebar apps in Microsoft Edge, open the Edge browser and click on the Plus (+) icon at the bottom of the Sidebar. Scroll down to the Manage section. You will see all the apps listed ...