A guest may redeem via the iFrame and you may notice on their timeline they have a requested redemption for a specific dollar amount. This can be seen in the screenshots below:
A guest being able to stage a redemption for banked dollars through the iFrame when your organization is not utilizing a "Points Convert to Banked Dollars" will see redemptions as pictured above if the "Redeem Rewards" configuration is active within the iFrame configuration.
If you are seeing redemptions as pictured above reach out to the support team because this configuration can only be adjusted by Punchh.