User Objects are saved by their coordinates in the sky, right ascension (RA) and declination (Dec). Since solar system objects are constantly changing their positions on the sky, they can’t be saved. Neither can constellations, which cover a region of the sky and not just one RA-Dec position.
The CCD Objects list is a compilation of objects from other database lists in the hand control (primarily the NCG and IC lists). It is the tour list for astrophotography objects that are generally too dim to be popular with visual observers. Since these objects are already in other lists, CCD Objects itself is not available to make a custom tour.
Variable Stars and SAO Stars are not presently available to build tours. This will be corrected in future firmware releases.