To share a task, first click on the task you want to share, and then click 'Share & Assign' . Click where it says, "Type a friend's email" and begin typing. After this, press 'enter' and then 'Send Invitations' at the bottom of the screen. If your friends are already using Any.do, they will receive a notification in their app that you have invited them to share a task with you. If they do not have an Any.do account, an email will be sent to their inbox. The users who have been invited will get a pop up notification with the shared task invitation. As soon as they accept it, you will receive a notification in your Notification Center.