In Shacharis, I’ve just noticed gray boxes that you insert throughout Rosh Chodesh and Chol Hamoed. After a a flip of a page it indicates another 2 boxes for both Chanukah and Purim and on Chanukah. The other gray boxes (next pages) don’t look relevant for the moment. Do I follow these gray boxes for this forthcoming holiday mentioned above? Thank you.
Yes. Inseret the proper boxes on the appropriate days. The reason why one box says Chanukah and Purim is because this paragragh is the introductary praise for the miracles that Hashem performed for us on Chanukah and Purim. After that we say the specific praise for Chanukah.
Have a Happy Chanukah