Barchu
From Halachipedia
- One may sit while the tzaliach tzibbur says Baruchu and then only stand when answering the Barchu. [1]
- If one continued Seudat Shelishit into the night (past Shkiah) should still say Retzay in benching, even if one answered Barchu. However, if one already said Maariv, one shouldn’t say Retzsay in benching. [2]