How to pick seats in advance with Etihad Airways?

Use the following tactics to reserve a seat in advance with Etihad Airways:
Choose your route and enter your departure city to travel there by plane.
For Etihad Airways seat selection, pick the date and the number of people.
Moreover, choose the cabin before clicking "find flights."
On the following screen, select the flight, then select your seats.
Select the seats from the seat map after entering the passenger's information.
After paying the costs, obtain the information regarding seat selection.
Source:- http://www.apsense.com/article/can-i-select-my-seat-on-the-etihad-flight.html