Enable users to answer any ringing line in their call pickup group
Click Services under the options pane
Click on Call Pickup under Basic
1) Enter a descriptive term for this call pickup group. Ex: accounting, sales, all employees, etc.
2) Click search to display all available users
3) Select the users you wish to be members of the call pickup group.
4) Click Add to move them from available to assigned
5) Click OK to save changes.