Browser notifications is a notification that pops out from the browser window you are using, regardless of which tab you are on. By enabling the browser notifications on Codementor, you will be able to receive notifications of new chat messages and incoming live sessions.
If you are using Chrome, you can also edit your browser notifications by clicking on Secure in front of the URL. From there, you can choose to allow browser notifications for your Chrome.
Once you've turned on the browser notifications, you will be able to see them at the bottom right of the tabs you are on.