Default [Q] Change Data Usage Cycle in taktiK 4.4.2. for Desire HD

I have a DHD Phone (obviously) and encountered a couple of problems with different OS's (Bluetooh mic did not work, or no internet coverage available over the Mobile Network, etc.). Finally I stumbled upon taktiK 4.4.2. Release, where everything seems to be right. The thing is, my mobile plan starts with 16 of current month and ends at 15 next month, so I want to change the Data Usage Cycle dates. How do I do that?
It is as if in taktiK 4.2.2. the button with changing the dates is absent; or maybe I'm bllind...

PS: Thanks for the help.