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 this
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.