The Diwan Hall is the hall in which the Guru Granth Sahib Jee is present. Guru Granth Sahib Jee is the 11th Guru of the Sikhs and serves as the source of spiritual and moral guidance. Within it’s pages are the holy scriptures, hymns and musical measures that were written, composed, and compiled by the Sikh Gurus along with Hindu and Muslim saints.

Guru Granth Sahib Jee is placed in a raised platform, covered by a canopy called chanani with all the sangat (congregation) sitting cross-legged on the carpeted floor facing Guru Granth Sahib Ji. Sitting together symbolises equality and humbleness. At the Guru Gobind Singh Gurdwara, it is the custom for females to sit on the left and for males on the right.

Traditionally, women and children, and men sit on opposite sides of the diwan hall. However, seating in a mixed pattern is in no way prohibited. Guru Granth Sahib is placed on pillows, which have 'beautiful cloths' draped over them, which are on a raised platform that has a canopy. The cloths, called Romallas, cover Guru Granth Sahib when it is not being read.

This is at the front of the diwan hall. Also in the diwan hall, there is another platform where musicians (called the Ragis) sit and play their instruments while the congregation are singing hymns. Music is an important part of Sikh worship because it helps when people are singing hymns that are written in Guru Granth Sahib. The hymns that are written in Guru Granth Sahib are called Gurbani, which means: The words of the Guru.