Справка LibreOffice 7.5
Поместите курсор в указатель или оглавление.
If you cannot place your cursor in the index or table of contents, choose , and then select in the section.
Щёлкните правой кнопкой мыши и выберите в меню параметр редактирования.
You can also make changes directly to an index or table of contents. Right-click in the index or table of contents, choose Edit Index or Table of Contents, click Type tab, and then clear the Protected against manual changes check box.