You can protect, hide, and convert sections to normal text in your document.
Choose Format - Sections.
In the Command Ctrl+A to select all sections in the list, and you can Shift+click or Command Ctrl+click to select some sections.list, click the section you want to modify. You can press
Do one of the following:
To convert a section into normal text, click Remove.
To make a section read-only, select the Protected check box in the Write Protection area.
To hide a section, select the Hide check box in the Hide area.