Sorry, forgot to anwser you ! ics : not directly, but maybe with DAVx⁵ and ICSx⁵ (https://www.davx5.com/faq/subscribe-ics-file), then you should see it and select it in Options, Synchronized Calendars. Default with sms:I don't know but I will check; end time : not possible today, I keep my app simple (too simple ?)