There are twelve services (Turkish: oniki hizmet) performed by attendees of the cem.
Mürşid or Dede: This is the leader of the Cem who represents Muhammad and Ali. The Dede receives confession from the attendees at the beginning of the ceremony. He also leads funerals, Müsahiplik, marriage ceremonies and circumcisions. The status of Dede is hereditary and he must be a descendant of Ali and Fatima.
Rehber "Guide": This position represents Husayn. The Rehber is a guide to the faithful and works closely with the Dede in the community.
Gözcü: This position represents Abu Dharr al-Ghifari. S/he is the assistant to the Rehber. S/he is the Cem keeper responsible for keeping the faithful calm.
Çerağcı: This position represents Jabir ibn Abd-Allah and s/he is the light-keeper responsible for maintaining the light traditionally given by a lamp or candles.
Zakir: This position represents Bilal ibn al-Harith. S/he plays the bağlama and recites songs and prayers.
Süpürgeci: This position represtns Salman the Persian. S/he is responsible for cleaning the Cemevi hall and symbolically sweeping the carpets during the Cem.
Meydancı: This position represents Hudhayfah ibn al-Yaman.
Niyazcı: this position represents Muhammad ibn Maslamah. S/he is responsible for distributing the sacred meal.
İbrikçi: this position represents Kamber. S/he is responsible for washing the hands of the attendees.
Kapıcı: this position represents Ghulam Kaysan. S/he is responsible for calling the faithful to the Cem.
Peyikçi: this position represents Amri Ayyari.
Sakacı: represents Ammar ibn Yasir. Responsible for the distribution of water, sherbet, milk etc..