Terminal multiplexers - create virtual consoles

[lse123new]

I am going to give LFCS admin exam in Cent OS 7 distribution... well since a SINGLE TERMINAL PERMITTED how can use this:
"Terminal multiplexers such as GNU Screen and tmux can be used to create virtual consoles."

...
Only a single terminal console is available during the exam. Terminal
multiplexers such as GNU Screen and tmux can be used to create virtual
consoles.
...

[mcgheee]

GNU Screen and tmux are applications that create virtual consoles inside of the terminal. So, once you have a terminal open, you launch Screen or tmux, and those applications can be used to divide the screen into multiple terminals (actually virtual consolse). In the example below, The blue box surrounds the terminal window. The pink box surrounds tmux running inside the terminal window. The red boxes surround virtual consoles created by tmux.

[lse123new]

what man pages provide more info...?

man GNUScreen
and
man tmux

?