Can we transfer/copy files from remote server to local system, without knowing to the admin or any other user of the server?

Secondly, if the server admin is on lunch (or any) break, then if i copy/transfer the file, later will he get to know that i copied the file?

Moreover, my system is connected to company internet connection. And, I am connecting to the server using remote desktop connection. In my system there is Skype, Skype for business, Google Chrome. And, I am not allowed to install anything in my system. And, at server system, i can install anything, so i have install Team Viewer. Note that, i don’t have WIFI password of my company.

I want to give remote access to other system, which is note connected to my company internet network, without knowing to my IT Admin. How can i do this?

Also, If i use Skype, Skype for Business on my system. And, if i use Team Viewer on server system. Will they know? what exactly they will know?

Note: My System: Windows 10 Pro, Server: Windows Server 2012 R2