timeclock-modeline-display

timeclock-modeline-display is a variable defined in `timeclock.el'.
Its value is

nil

• This variable is an alias for `timeclock-mode-line-display'.
• This variable is obsolete since 24.3;
  use `timeclock-mode-line-display' instead.

Documentation:
Non-nil if Timeclock-Mode-Line-Display mode is enabled.
See the command `timeclock-mode-line-display' for a description of this minor mode.
Setting this variable directly does not take effect;
either customize it (see the info node `Easy Customization')
or call the function `timeclock-mode-line-display'.

You can customize this variable.