If people are sitting together to eat in a kevius, one of them can recite the brocharishona on behalf of the others. This is actually the best approach, in accordance with b’rov am hadras Melech (the more people who do a mitzva together, the greater the honor to the King).
Some poskim hold that it is preferable to listen to Kiddush or Havdala while sitting, as there is more of a kevius when people sit together. Others hold that as long as the listeners are standing in one place, there is a kevius and they can be yotzei while standing.
Regarding a brocha achrona, each person should recite the brocha on his own except in a situation of zimun. This is because at the end of the meal, when everyone is going on his way, there is no kevius.
Why is malchus not a component of the brochos of Shemoneh Esrei?
Which names of Hashem can be used in a brocha?
Is one supposed to answer Amen to his own brochos?
PLEASE NOTE: The information in this email is for learning purposes only. Please review the Mishna Berura and Biurim U'Musafim before making a halachic decision. Hebrew words are occasionally transliterated to enable a smoother reading of the text. Common Ashkenazi pronunciation is generally used in these cases.