Well, apparently you have this somewhere:
[SomeMeter]
Meter=Background
At least I think.
And for more launchers, you would just copy the code for another launcher (from #SkinsPath#\Enigma\Taskbar\Launcher), name it launcher6 or whatever and give it it's own folder. Edit all the numbers after #App# to make it #App6#, #App6Path#, etc.
Then, edit 'DefaultVariables.inc' from #SkinsPath#\Enigma\Resources\Variables and add
App6=APP NAME
App6Path=APPLOCATION.exe
App6Label=APPLABEL
but change what's after the = of course.
Now, I don't know if it'll show up in EnigmaConfigure so you may have to edit it yourself if you want to change it again.
Refresh all and tada! An extra launcher.