If you are a spouse, cohabitant or child of a diplomat or NATO personnel, and you are not going to work in Norway, you do not need to apply for a residence permit.
If you are going to work or run a business in Norway, you must apply for a residence permit as a family member of a diplomat or NATO personnel.
Requirements for a residence permit for work
You must be a spouse, cohabitant or dependent child of a diplomat or NATO personnel.
You must be registered with and accepted by the Norwegian Ministry of Foreign Affairs or the Norwegian Ministry of Defence.