You can set your current presence status to indicate your availability for a call to other users.
How to set the current presence status:
Click theicon in the menu bar.
Select a presence status below. You have the following options:
. You are signed in and can be contacted.
. You are currently absent and can not be contacted.
. You do not want to be disturbed, e.g. if you are in a meeting.
. You are not signed in.
as an email's sender or recipient
in the address book list view, in the address book detail view
as appointment participant, as task participant
Parent topic: Customized Settings