Sidurim (such as Rav Yaakov Emden's, but also modern nusach S'farad ones like ArtScroll's and T'filas Kol Pe) include a short prayer after various of the paragraphs of "Ezehu m'koman" asking God to ...
Do you have to say korbonos? If so, why is it not said with the shaliach tzibbur?
I have seen in many siddurim, mainly in korbonos, the phrase "if you have time, add this parsha". How do you know if you have time? It seems obvious that if adding it would make you miss zman ...