VoiceWarrior has a special macro file that is always active, even if no profile is loaded. This macro file is named VoiceWarrior.vcm and it is located in your user Documents folder under the VoiceWarrior directory.
You can open this profile and modify it directly like you would any other file.
As a shortcut, you can also start a new file (which will bring in the global commands), then add a few new commands before saving your file as the global VoiceWarrior.vcm file (overwriting the original one).
Global commands show up in blue in the Command List area, while commands that are part of the local profile show in black.