"Charge with Stripe" checkout option - Processing POS payments

The EHR checkout has three options: Cash, Card on file and Charge with Stripe.

The third option "Charge with Stripe" is meant for processing transactions through the Stripe terminal (aka. "card reader"). Which must be linked to your EHR location through Scheduling > Locations > "Register Stripe reader" (and then entering the code that is shown in the Stripe terminal screen). This process is explained in detail here.