1d081462_Some_Clarifications___WBXPress__Clarifications
[Points of doubt] 2. Whether the benefit will be available on the date of entitlement or on the date of usual increment on the 1st July of the year? [Clarifications] 
Since the benefit is linked with option for fixation of pay on the date of entitlement or on the date of annual increment on the 1st July of the year, such fixation of pay for the non-functional benefit will be strictly guided by the principles laid down in para 3 (i) of the Memo No. 181-SE(B), dated 08.10.2009.
Pay Fixation of Teacher - Some Clarifications – WBXPress
Clarifications