Generally The GatePoint is upon a raised platform. On the center of the platform, is a red circular halo suitable upto five people to enter, defining the gate zone. The Gate Point is often framed by an arch or container of some kind, that fits the look of the world. This could be a set of standing stones, a transporter cone, a cathedral of trees, two intertwining Venician statues, or what ever best reflects the Sphere. There is often a public square or temple build around the GatePoint. In one place, the gatepoint is always on a train that is just about to pull into the Great Central Station.
There is supposed to be free travel to and from a GatePoint. In some cases there is a "toll" to enter the city around the gatepoint. Sometimes you can get a proctor to escort you directly to the gate to avoid the toll.
Once an Avatar is on the GatePoint, they can will themselves to the next world in the ring. Travel is then DeSol or Widdershines (Counter Clockwise or Clockwise) along the Ring. New Worlds appear along the ring as they are added to it. If the Proctor's have blocked access to a sphere, that character "skips" over it.
There are Five Worlds with two GatePoints, one Red and the Other Blue. The Blue GatePoints transfers one to Cynosure, the Central Proctor's Sphere (Which is one giant city with different areas having different rules of reality-to be detailed later). Cynosure has five green GatePoints, back to these five worlds. Thus you can sometimes "cut across" the sphere by travelling to Cynosure, saving time in jumps. The Proctors charge 10 Coyns to utilize the Cynosure gate (unless you are a Proctor, Militia, or Agent, then it is free).
There are rumors that The Proctors, with the aid of priests, can create temporary gates elsewhere in the world, allowing them to import monsters to a sphere. But this is only a rumor. But if only one gate point is allowed to be active on a world at a time, it would explain the odd periods of time when certain spheres/ gates are not available.