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 application is submitted, reviewed and approved. The wife must be outside Oman when the application is submitted, must not hold any other valid Oman entry visa, and her passport must be valid for at least six months; the visa must be used to enter Oman within three months of issuance. The official source does not state the rights granted, the duration of the status or any path to independent or longer-term status.
See recorded sources
Limits of the record- Rights granted (work, study), duration of the residence status and any path to independent or longer-term status are not stated on the page.