Email
Here you enter the email address of the person who should be notified when changes happen. It is possible to enter more than one email address here, just use ; after each email address to separate them.

Message group
Another option to send message to more than one person is to use messages groups. Here is more information about how to edit/create message groups in the admin section.

OPC action
In this drop-down menu, you can select an OPC action. However, please note that if no OPC action should be used you HAVE TO select the option "None". Here is more information about how to edit/create OPC actions in the admin section.  

Title
Here you enter the title/headline for the message.

Message
Here you enter the message itself.