Yosef Karo

“ On the second day as well, one should say "sacrifices."
סעיף ג
צריך לומר את מוספי יום הזכרון כדי לכלול גם מוסף ר"ח וגם ביום שני יאמר את מוספי:
591:4 We say ten verses of kingship, ten verses of remembrance, and ten verses of shofar blasts in each blessing. Three of them are from the Torah, three from the Writings, three from the Prophets, and one from the Torah. If one wants to add to these ten, they are allowed to. However, if one has not started any verse and just says "as is written in Your Torah," they fulfill their obligation (Tur) . ”

“ Those who are precise to say "...for the descendants of Jacob" is changing the wording for blessings that the Sages formulated and is in error. Rem"a: We say "Aleinu" and "Meloch" and the leader says "Ochila" and other piyyutim, everywhere according to their custom (Tur) . ”