To access sharing options, long click on an event then select Share. You cannot share an event already shared to you by another person. You can stop sharing, change sharing settings or share to other persons an event already shared by you, for this select the option Sharing settings after a long click on a shared event.
The principle of sharing an event is to push all its data to a server, then you send a link to the persons you want to share to. This means that anybody having the link can access the event data, there is no authentication. This is important because if your event contains sensitive data, you must probably not share it.
A person having the link, can view the event data on a simplified read only web site. Or synchronize this event with the application, once synchronized this person may do modifications to the event (add/change/remove operations/friends/categories...).
The first sharing options are the following:
In the same screen your event friends are listed. You can select to whom you want to share and the method (email or SMS). The email or mobile phone number must be entered in the friend settings if you want this feature working.
In case of email, the email client will be opened so you will be able to see and modify the recipients and the content of the message.
In case of SMS, the application will send the SMS. If the recipient have the application installed, the SMS will be caught by it and an ABCBA notification will be raised.
Other recipients is an option if you don't want to share to the event members, this will open the email client and you will be able to enter the recipients you want.
You can share using a QR code.