You mean the Signatures right? Asking questions is not silly.
Just hover your mouse pointer to Profile tab, you will see the link at the top of this page below your photo. There should be a drop down,choose
Forum Profile. Once you are directed to another page it will show MODIFY PROFILE. Scroll down the page and you will see SIGNATURE. That's where you can add
text or URLs as your signature which will show underneath your every post.