There are two offices in Christ’s church that men may hold: elder (overseer, pastor) and deacon (servant). For a full treatise on these offices, we would recommend Alexander Strauch’s excellent books, Biblical Eldership and The New Testament Deacon.
For a detailed view of what we believe about pastors/elders and deacons, please see our doctrinal positions. To summarize though, we are neither a congregational-rule church, nor a one-man-rule church. The biblical pattern is for a local church to be led by a group of elders. Each man will have different giftings and different callings. Some may earn their living from the gospel, while others may hold secular employment. Each one, though, is to serve faithfully as an under-shepherd of the flock, accountable to the Chief Shepherd.