Internally, Cinema 4D uses invisible objects, which cannot be called up anywhere, to display numerous settings whose settings also affect other elements. This is not relevant for you as a user. This will only play a role when the Help function is called up.
For example, if you call up the Blending tab in the Time Field Layer, the Layer Object will be shown; if Remapping is called up, the Field Remapper will be shown. These objects (and others) are described in the following.