A widespread phenomenon with no basis in the Sunnah when entering gatherings: "Peace be upon everyone present."

The Shaykh : Please allow me to speak with this young man, Alaa.
There is a custom that has become prevalent in the present day for which I have found no basis in the Sunnah. When a person enters, the Sunnah, as is well known to you all, if Allah wills, is to greet the others with the salam. Then, to complete this greeting, if it is possible for him to shake hands with each one of them, that is light upon light. However, if the gathering is somewhat crowded or if it would be an imposition, then as he (peace and blessings be upon him) said regarding the one who enters, he should sit where the gathering ends. As for what happens today, naturally, this is not for the general public, but some people, when they enter, greet each individual with a salam: "As-salamu alaykum, as-salamu alaykum, as-salamu alaykum," for example, here there are about ten or more, so he offers a salam for each person sitting. I have not found a basis for this in the Sunnah, so I wanted to point this out: when you enter, may Allah bless you, you say "As-salamu alaykum" once. If it is then possible for you to shake hands with those present, that is good, based on his (peace and blessings be upon him) saying: This is part of the virtue of shaking hands. As for the salam, one salam, "As-salamu alaykum," and then he sits where the gathering ends. This is what I wanted to remind the blessed young man of, if Allah wills.