https://learn.microsoft.com/en-us/powershell/module/az.rediscache/new-azrediscacheaccesspolicyassignment?view=azps-15.6.0&viewFallbackFrom=azps-15.4.0
New-AzRedisCacheAccessPolicyAssignment (Az.RedisCache) | Microsoft Learn
Create an access policy assignment (redis user) for a Redis Cache.
newazrediscachemicrosoftlearn