1.  Select Asset Management from the left hand column of categories and click once (double click is unnecessary) on List Assets in the right hand panel:

    

 

2.  Navigate to the intended asset in the list and double click:

    

 

3.  Click on the depreciation tab:    

 

4.  Click on the calendar icon and select the proper date:    

 

5.  Click on "OK" on the bottom right to save the changes in the asset record: