The Settings - GDPR page is where you can enable GDPR.
The General Data Protection Regulation (GDPR) is a regulation in EU law on data protection and privacy for all individual citizens of the European Union (EU). The GDPR aims primarily to give control to individuals over their personal data and to that end, you may enable GDPR from the Settings - GDPR page.
Once you check the "Enable GDPR" checkbox, the customer will receive a GDPR notification email during the booking. The email will contain a private link that will take them to a page where they will be able to download a copy of all their data stored on your system and also issue a request data deletion.
When a request for data deletion is made, as the admin user, you will be able to attend to such requests in the "Settings - GDPR" page, where you will be able to either accept and allow deletion or deny.