I want to ask why there is only me on Task Manager's Users tab.

Originally I wanted to be able to chat with other clients on my local network using msg command, but I can't found any other user.

How to see other users on the same network? I use Work Network, and all of the users is using wifi to connect.

I googled about it, but no information is close enough.

As much as a newbie question it sounded, I really appreciate any help.

Thank you ! :)