When you get a reminder notification you should be able to press a sleep button on the notification. So that you are able to close the notification when you are in hurry or in the end of a meeting. After a couple of minutes OneCalendar should remind me again. Like a snooze button on an alarm clock. 

Seria excelente poder agregar multiples reminders. Ahora solo deja uno. gracias.

Repeating others suggestions of snooze for reminders. Thunderbird has it, replaced TBird with 1C. That would be a definite reason to go "premium"

 I have 9 Students, and would like to give each Student a different color for planned events.

Drag and drop events.

Copy/paste an event.

I love the list view to see what's coming up soon in my calendar! I'd like it even more if I could hide the month at the top of the view and just see my meetings.

I would like to have the possibility to set an appointment as "privat"

At 7:22 pm, I put in a test event for 8 pm, with a 1-hour reminder.

After creating the event, I see it in my calendar, but to my surprise I didn't  see a reminder.

So I modified to give me a 30-minute reminder. It's now 7:28. I'm waiting to see what I get. (If I don't have a noticeable reminder that grabs my attention, that's the end of the experiment. I need a calendar system specifically for reminders--'cuz I'm somewhat "calendarically challenged".) Ah. That worked. There is a nice STICKY reminder at the bottom right that STAYS there until

availability "OneCalendar" in the Cloud could be very interesting especially when synchronised with local app

There needs to be a way to select a default Google calendar

instead of clicking in the upper left corner

The background color for any appointment needs an option to be transparent. At first, I liked all the color coding, then as my calendar filled up, it became over whelming, too busy on the eyes. Need to use color sparingly, so a transparent option is needed.