Custom Link

You can use the hook function to customize the function.php of your theme.
The only function of the plugin itself is to retrieve information from Google Calendar and link to the calendar. However, you can customize it.

For hooks, please refer to the “How to use Hooks” section on
https://info.cseas.kyoto-u.ac.jp/en/links-en/plugin-en/wordpress-dev-info-en/google-calendar-list-view .