LO help refers to a Edit Index panel. Where is it?

writer 4.4.5, iMac I am trying to format a Contents page. Styles does not ‘update style’ in Contents 1, 2, etc. for paragraphs or characters. Manual editing disappears after an ‘update index’ command. LO help refers to an Edit Index panel that should appear after right-clicking in the Contents. This does not occur nor can I find such a panel elsewhere. How does one format the appearance of a Contents?