I've noticed that whenever we create a new event in the Calendar, the event will not be approved immedaitely. Instead it was being queued up just like any other topics.

I wish IPB had a setting in User Groups which is "Bypass Calendar Moderation Queue", so that whenever we post an event in the calendar, we won't have to see the event and manually approve it(make it visible)

I think I've already done this on my board, forget where the setting is though.

There is an existing setting for which groups can bypass calendar moderation. As per the note at the top of the page, you can submit a ticket or post on IPSBeyond if you need help with that.