Mandatory information about my setup:

Have I searched the tickets before posting? Yes
Have I searched the forum before posting? Yes
Have I read the documentation before posting (which pages?)? Yes
Joomla! version: (unknown)
PHP version: (unknown)
MySQL version: (unknown)
Matukio version: (unknown)
Direct link to the page that shows the issue: (unknown)


Description of my issue:
Love Matukio, I hope you can help with a customization. My client needs to be able to mark who attended the event. Some registrants do not show, so they have to have a way to show who did attend. They were used to having an extra field to check off for attendees. What is your recommendation here?