There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section. Before you post please read how to get help
Right-click an empty spot on the panel, select Panel > Add New Items. Scroll down, and add XfApplet. Find the added XfApplet icon on the panel (small yellow circle with a black mouse silhouette in it), right-click that and select Properties. Select mintMenu. After a short load time the new mintMenu button should appear on the panel.