There is no offical religions. There are ones recognized as tax free non profit corporations, but that is as far as the government's recognition goes. To be considered for tax exemption, a religion must...
1; Have a minimum number of members.
2; Be completely non-profit.
3; Follow rules regarding how they spend their money. For example, they can not give more than 49% of their revenue to any political campaign or political action committee.
4; May not charge members to be part of the church (Scientology's tax exempt status is being challenged because they require members to pay in order to have access to certain church services, which is illegal, and there are allegations that top leaders take money from the church for personal use, which would make it a for-profit organization).
5; Must have a set corporate structure (board of directors/President, Vice-President, etc.
6; Must have a set religious hiararchy/clergy made up of officially ordained minsters. This can not anything from the elaborate ranking system the Roman Catholic Church uses, to a simple one. The religion I am starting has a rather simple one.
The President of the Corporation, who services as the public face of my religion shall be known as the Archbishop. Under him, shall be the rank of Bishop, leaders of individual churches. Under each Bishop shall be Deacons who assist the bishop in running the church and sometimes perform worship services.
The Archbishop is elected by the Council of Bishops, made up of all Bishops of the church.