Hello ..
I am new in using Dynamics AX 2012 , I am about Learning GL Setup ,
I have faced a problem in creating my first fiscal calendar , when i create a new fiscal calendar it by default automatically creates first fiscal year at this fiscal calendar .
The problem is that when i try to set the first fiscal year start or end dates , but it is not editable , and the next month button of the calendar is dimmed as it shown in the attached image 
.
How can i fix this problem ?
Thanks .....