Insert a header

Select Insert > under Header & Footer go to Header.

Choose the header style you want to use. To create your own, select Blank and then edit it.

Select  Edit Header to open the header on the page you've selected. If you haven't selected a page, it'll open the first header.

Choose  Remove Header to delete all headers.

If you've created a custom header, and it's selected, you can choose  Save Selection to Header Gallery to save it for later use.

When you're done, select Close Header and Footer or press Esc.