How can i create header and footer on Liber Write
The answers below should solve your immediate problem.
You might wish to download the Writer guide which is more structured help. You don’t need to read it cover to cover, dip into it to answer questions you have at the time or to find out how to do something you haven’t done before. After a while you will find you have a better understanding of Writer and how it can make writing easier. https://documentation.libreoffice.org/en/english-documentation/
Header and footer are attributes of page styles. They must first be enabled.
Considering the way you ask your question, you’re a beginner and probably write “simple” documents.
At this stage, Format>Page Style and go to Header or Footer tabs to tick Header/footer on and press OK.
When back in the document view, click above the text area (or below for footer) and enter your header. Click in the text area to return to it.
Please use menu ‘Insert’ >> ‘Header and Footer’ >> ‘Header’ >> ‘Default Style’ and start typing your header. When you are finished, press ‘Esc’ on your keyboard to return cursor to the page body.
Similarly, Please use menu ‘Insert’ >> ‘Header and Footer’ >> ‘Footer’ >> ‘Default Style’ and start typing your footer. When you are finished, press ‘Esc’ on your keyboard to return cursor to the page body.