Halacha:

Contemporary Issues,  Tefillah 

Collections: R' Grunstein Talking in Shul

References: Succah: 51B  

Description

It seems that since the Gemara describes that the seating arrangements in the BIG SHUL in Egypt were arranged by...profession, to the extent that a poor person, with that profession, would know to sit there, talking is allowed [at certain points] in shul about necessary matters