Updating, Editing and Deleting Indexes and Tables of Contents
From LibreOffice Help
- Place the cursor in the index or table of contents.
If you cannot place your cursor in the index or table of contents, choose Tools - Options' - LibreOffice Writer - Formatting Aids', and then select Enable cursor in the Protected Areas section.
- Right-click and choose an editing option from the menu.
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.