This is where I am stuck... I have managed to get the TOC working by creating an article page in joomla and pasting the following into the entry block:
To add the filter and legend plugins, I haven't found a specific reference to the page or document that I need to paste the following:
Following various threads found in the forum, I have tried adding this in a number of the documents related to the joomla template and calendar but with no success (demo.php, calendar.php, the template's .css and index pages, the entry block on the actual page, etc).
Many thanks for all your help.