I don't understand the concept below: Who is covered? HELP!

Permissive users of covered autos owned, hired or borrowed by the named insured, except: the owner or anyone else from whom the covered auto is hired or borrowed (unless the covered auto is a trailer attached to a covered auto owned by the named insured); an employee, if the covered auto is owned by that employee or a member of his or her household; a partner of yours, for a covered auto owned by him or her or a member of his or her household; someone using a covered auto while in the business of selling, servicing, repairing or parking autos (unless the business belongs to the named insured); and anyone other than the named insured’s employees, partners, lessee or borrower or any of their employees, while moving property to or from a covered auto.