The Calendar was opend for all to add event or chattimes /dates.
To add a chattime state the time from to when you will be at the chatroom..
To use the calender you must click up in the header on calender...
You post the event or whtever as a message and then under the usual preview and send button ,you will find some dropdowns to set the date,the time of the event.
Your event will also show here at news.
Or you open topic and write the message here and set the calendar time and date here under the send button before you hit send,you message will now display in the calendar