I have set up a page where the client can go into the control panel and upload a number of dates and times for appointments. There is also a checkbox where she can indicate if this date is already booked.
The page then displays a list of dates in a radio box format. If the date is already booked the radio box is disabled.
When the user selects a date on the page and submits the form, is there any way this can change the value of the 'booked' checkbox?