Manners of Giving Salaams When There is a Lesson or Gathering – Shaykh Salih al-Fawzaan
When a person enters upon a gathering which has scholars, students of knowledge, laypeople and they are speaking; does he give salaams and sit, or does he go round everyone giving them individual salaams?
There is no doubt that gatherings have (prescribed) manners, so if the people enter and this gathering is a gathering of knowledge and a lesson then indeed, he sits down and listens and delays the salaams until there is a gap, likewise if the sitting was a sitting of conversing and one person is speaking and the rest are listening then also, he sits and does not give salaam until the speech stops. As for if the speech was shared amongst the people sitting then indeed, he gives salaam generally and he can single out whoever he wishes to give salaam to alone.
http://www.alfawzan.af.org.sa/sites/default/files/14330102_01.mp3 .