How does the application work at a high level, what rights does the family member receive, how long does the status last, and how can it become independent or longer-term where officially stated?
The route is conversion to a probationary non-quota immigrant visa by marriage: documents are pre-screened by the CRU or authorised Immigration Offices, the applicant attends a hearing, completes image and fingerprint capture and ACR I-Card application at the ARD, and if approved submits the passport for visa implementation. The official source does not state the rights attached to the probationary status, its duration or how it becomes permanent.
See recorded sources
Limits of the record- The rights attached to the probationary status, its duration and how it becomes permanent are not stated on this page.