Q. When an ovel during shiva davens in shul, and there are other avelim on later stages of mourning, (such as shloishim) does he have priority before the others to daven before the omud?
A. Horav Shlomo Miller's Shlit'a opinion is that if he is in mourning for one of his parents he has precedence, but not when he is in bereavement for other relatives.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit"a