You can define whether the newly created page has a watermark by default.
Click "Watermark for new pages", and the pop-up window is as follows:
Show Watermarks: The newly created page has watermark;
Hide Watermarks: The newly created page does not have watermark;
Same as the parent page: It will follow the parent page. If the parent page has watermark, the newly created page will also have watermark, and vice versa. If there is no parent page, you can define whether to display the watermark.