Just as each of us has one body with many members, and these members do not all have the same function, so in Christ we who are many form one body, and each member belongs to all the others. (Romans 12: 4- 5)
Church has diverse functions although it exists as one body. Having every function fully active builds each church to be strong and able to minister various needs of people.
Olivet Assembly of USA has affiliated Christian organizations and ministries that give specific focus on certain groups such as Medical, Charity, Prayer, Music, Youth, Family and etc. Most areas of those should also operate in local level in local churches.
OA USA helps churches be connected with professional ministry organizations and fellowships by active coordination and united services in order to strengthen OA congregations to grow in a well-rounded shape.