Assign different symbols to a button?

[soulslider]

Yes, now there is... but I >think< I had changed this, when I first installed this - am I wrong?

However:
I would like to be able to change what's assigned to every button...
I think everyone uses different things more or less frequently...
I don't use "," a lot for example...
...so I'd like to assign "." and "&" to one button, where now there is ".,"

So I can type quicker and have all the symbols on the "first level" I use the most... do you get, what I mean? Not sure, if I described it right.

The keyboard would get individually set up for everybody.