Sellout uses a single QR code for all tickets purchased in your order. You can either print the QR code at home or just present it on your mobile phone at the gate to be scanned into the event. Every time the QR code is scanned, one person is permitted entrance into the event and one ticket is deducted from your order.
If members of your party are arriving at different times, simply forward them the email from hello@sellout.io containing the QR code and they will be able to use it to be scanned into the event.