Успях да премина през "основната" информация в календарно намерение...
но когато се опитам да добавя присъстващи към намерението, те не се вмъкват. Ето кода
startCalIntent = new Intent(Intent.ACTION_EDIT);
startCalIntent.setType("vnd.android.cursor.item/event");
startCalIntent.putExtra(Events.TITLE, title);
startCalIntent.putExtra(Events.EVENT_LOCATION, location);
startCalIntent.putExtra(Events.DESCRIPTION, details);
startCalIntent.putExtra(Events.ORGANIZER, organiser);
startCalIntent.putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, splitDateTime(date, startTime));
startCalIntent.putExtra(CalendarContract.EXTRA_EVENT_END_TIME, splitDateTime(date, endTime));
startCalIntent.putExtra(Events.EVENT_TIMEZONE, "Europe/London");
startCalIntent.putExtra(Attendees.HAS_ATTENDEE_DATA, "1");
startCalIntent.putExtra(Attendees.ATTENDEE_NAME, "DAVE");//<---NOT WORKING
startActivity(startCalIntent);