If the Sheva Brachot was started while a minyan was present, but then some of the people left before all of the brachot were recited, can they continue to recite the remaining brachos?
A. Poskim rule that they can. Pischei Teshuvos 62:14, Aruch Hashulchan 62:13. Nitei Gavriel (Nisuin 23:4) assumes that this is true only as long as the majority of the minyan remains.
Rabbi A. Bartfeld as revised by, Horav Yaakov Hirschman, Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit'a