Click File in the ribbon, then select Options from the menu. In the Word Options dialog box that appears, click Customize Ribbon in the left panel. You'll see two columns showing available tabs and ...

Make custom forms in Word that are functional and frustration-free.

If you run into a conditional header or footer request that you can't handle, take a look at Word fields. They're not magic, but it kind of feels like magic when they do what you want.