The RF is headed by a Deputy Commissioner (DC), and is mainly responsible for uniformed security arrangements at Raj Bhavan, State Secretariat, State Legislative Assembly, High Court and City Sessions Court, and other lower courts. Escorting of prisoners and guarding prisoners admitted to hospital are also among the responsibilities of this unit.

The DC RF is in charge of the Central Lockup at Lalbazar, which is quite distinct from lockups at other police stations. The Central Lockup usually accommodates all female prisoners, prisoners classed as Division I, and prisoners suffering minor illnesses not requiring hospitalisation. This requires the services of a medical officer, who works under the Police Surgeon and resides in quarters provided in the Central Lockup building.

The processing of applications for all new and renewable arms licences is done at the Arms Act Department, which is under the direct supervision and control of the DC RF, who is empowered by the Commissioner of Police to issue licences for all types of firearms except small arms.