The NHS Test & Trace feature, will ask visitors if they have the app installed on their smart phone. If they answer yes, the system will show your site QR code on the screen for the visitor to scan with their phone.
To complete this task on the Dashboard simply follow the steps below
Log into your Dashboard
Settings > Account
Toggle on the 'Enable COVID Trace Screen' (Please note this option will not appear if your iPad is not on the latest version.)
Now the feature has been enabled you can upload your sites QR code by following this article.