To make a subdirectory NEW_DIR press <Return> (<Enter>) key and you will see such screen (note that VTfm file bar highlights the new subdirectory file NEW_DIR.DIR;1)
3.16 Quit <F20> (quit VTfm)
For quit VTfm press <F20> key. You will see the “QUIT” window
Select item you wish (i.e. “Yes” or “No”) by pressing Left/Right arrow, Up/Down arrow, <Tab> or <Backspace> keys and press <Return> (<Enter>) key (for cancel Quit operation press VTfm escape <KP0> key).