org-agenda-menu-two-column

org-agenda-menu-two-column is a variable defined in `org-agenda.el'.
Its value is

nil

• This variable is an alias for `org-agenda-menu-two-columns'.
• This variable is obsolete since 24.3;
  use `org-agenda-menu-two-columns' instead.

Documentation:
Non-nil means, use two columns to show custom commands in the dispatcher.
If you use this, you probably want to set `org-agenda-menu-show-matcher'
to nil.

You can customize this variable.