The new Taylors now have a bolt-on neck. So when the action is too high or too low, you can change that simply with a neck-reset. ( PS: If the angle of the guitar is not good of course, when the angle good is you have to change the action with the saddle).
In the body are three screws, which are connected to the neck. With special tools you can loosen and tighten the neck screws. When the neck is no longer attached to the body, you can put shims under the Neck on the body (as in the picture). And those wooden shims are available in various thicknesses. so you can change the angle of the neck to the body.