I got this working on my site but it seems only the admin can actually generate the images. (or at least, the person with the password)

Is that the way it's supposed to function? Instead of folks being able to generate their own sig image the way they want?

Anyone can generate the images, just go to

BASEDIR/ROSTERFOLDER/addons/siggen/sig.php?name=NAME

Replacing BASEDIR ROSTERFOLDER and NAME respectively.

Only admins can change the design of the signatures though, such as fonts/images etc.