(Platinum version of the plugin)
With the iCal addon the users will receive an iCal file as part of the confirmation email after the form submission. The iCal file allows to be imported into most popular calendars like Outlook and Google Calendar.
DocumentationEnabling addon

Easy to activate
To activate the add-on, simply visit the plugin page through the menu option: "Settings/Calculated Fields Form", tick the checkbox: "iCal Export Attached", and press the "Activate/Deactivate Addons" button.
iCal Settings

iCal Settings
Enter the name of date/time field, the the text for the summary and the event description, select the corresponding values through the timezone related attributes.