Well Laravel doesn't offer this out of the box. If you want to build something like this you will have to do it yourself.
Anyway, the concept should be easy right. You need some way to track the current logged in users by there session.
I think the file session is the least useful here, because you can't see from the file which user it is. You would have to read all the files to determine that. However a database or Redis session can be changed so you can attach a user ID to it.
What have you tried so far? I don't have code ready for this, but maybe we can work out something together!