The custom data collection can be exported by passing them through the customData option.
The exportType allows you to set the format of an Excel file to be exported either as .xlsx or .csv.
The custom or specific field collection of event dataSource to be exported can be provided through fields option.
The fileName denotes the name to be given for the exported file.
There also exists option to export each individual instances of the recurring events to an Excel file,
by setting true or false to the
includeOccurrences option, denoting either to include or exclude
the occurrences as separate instances on an exported Excel file.