Hi Mehtaz Afsana Borsha,
sorry, but I disagree with your approach to the topic. Using the menu in your Framework with the arrow keys or moving around with the TAB key, or rather the lack of such a possibility, is a serious problem and should be solved by your programmers.
BTW, about half a year ago I exchanged correspondence with Paweł Frankowski and he informed me that it had been reported to the wish list and was to be considered for the next updates of the framework.
I hope that someone will finally look into the subject and this solution will be implemented in the near future.
Best regards