Graph - Access Review

maybe the following can help you 

$notifRecipients = @(
    @{
        notificationTemplateType = "CompletedAdditionalRecipients"
        recipients = @(
            @{
                "@odata.type" = "#microsoft.graph.accessReviewNotificationRecipientScope"
                notificationRecipients = @(
                    @{
                        "@odata.type" = "#microsoft.graph.user"
                        emailAddress = "email address removed for privacy reasons"
                    }
                )
            }
        )
    }
)

# Example Access Review Creation
New-AzureADMSAccessReview -ReviewId <ReviewId> -Settings @{
    autoApplyDecisionsEnabled = $false
    instanceDurationInDays = 30
    mailNotificationsEnabled = $true
    recurrenceSettings = @{
        pattern = @{ type = "weekly"; interval = 1 }
        range = @{ type = "endDate"; endDate = "2024-12-31T23:59:59Z" }
    }
    reviewers = @(
        @{ "@odata.type" = "#microsoft.graph.userSet"; id = "<UserId>" }
    )
    additionalNotificationRecipients = $notifRecipients
}