When making a chart in Excel, how do I put a heading at the top of the page?

I am making what will be a sign-up sheet in Excel. It will have four columns, for name, department, cell phone # and email address. I want to put a heading at the top of the sign-up sheet, saying what it is, so people know what they’re putting their information down for.

How do I put the header at the top of the page? I did the columns already.

I googled Excel, and there’s a lot of vague information. I just want “click this, click that.”