It all depends on the type (and size ) of dish you have installed.
Most fixed dish manufacturers use a linear actuator in the vertical plane to raise the focus of the dish, a few will however, have a dedicated gearbox and tracking mechanism to calculate up front, where an inclined orbit satellite will be.
Motor homes often use a two motor system for parking up and locating a fixed satellite where the actuator also operates the capsule open/close mechanism.
Then there are the all in one systems, often called self-stabilising systems, where the motion of the vehicle is compensated for by the use of fast tracking software and/or gyroscopic correction, often used on large boats.