You will need one person to take charge and oversee the ceremony. This person is responsible for starting and finishing the service, performing official duties within the ceremony, and coordinating all the activities in between. This person is called the officiant.
If your loved one was involved in a religion, the clergy from his or her church may be the logical choice. If the person who died (the deceased) was not a member of a specific church, you can invite clergy from another church or an officiant with no church connection to perform a religious ceremony.
Most clergy will follow an order of service dictated by their religious rules. This typically includes prayers, readings and blessings for the deceased and saddened family members.