Does this thread help? https://the-lilypad.com/forum/threads/creating-linking-and-updating-signatures.39755/
Actually that thread shows how to have different areas of your signature linked to different places. Here's a simple method to getting a new siggie: you create a new signature and upload it to the gallery. Then in the gallery, copy the stuff in the box below "Share BB Code:" then in the upper right corner of the forum, hover over your name and click "Signature" paste "Share BB Code:" in the signature box and click Save Changes. hope that helps!