Here’s a screenshot of how Facebook does it:
https://lodestar.typepad.com/.a/6a00d8341bfc6e53ef0148c6cf4009970c-pi
Generally though, the user would come in, there would be a badge count of unread notices on top of that globe icon, they would click it, and see all the notices in the container, and then click again to close…something like that.
Thanks!