Add More Fields/data To A FullCalendar Day

I am working on a web app using the FullCalendar JQuery plugin to display the absence/presence of workers each day in a company. I need to display several types (or fields) of info

Solution 1:

Non-standard Fields This was taken from Fullcalendar website.

In addition to the fields above, you may also include your own non-standard fields in each Event Object. FullCalendar will not modify or delete these fields. For example, developers often include a description field for use in callbacks such as eventRender.

You can add any fields you want, fullcalendar will not change them.

events: [
    {
        title: 'John is sick',
        start: '2013-11-19',
        allDay: true,
        description: 'Hurrayyyyyyyyyy',
        myotherspecialfield: ':P'
    },
    {
        title: 'Mike is on vacation',
        start: '2013-11-21',
        end: '2013-11-26',
        allDay: true,
        description: 'Hurrayyyyyyyyyy'
        myotherspecialfield: ':P'
    }
]