If you look up the G04 command you will see that it is followed by Px where x=Dwell in Seconds or Milliseconds. As an example the Gcode command line G4P3 will give a 3 second delay assuming 'G04 Dwell in ms' is unchecked in Config/ General Config.
If you lathe screen does not allow you to see the Gcode Summary then temporarily select the Mill screen (1024.set) to view.
Tweakie.