Yes. You can certainly add as many privacy policies as required with Magento 2 GDPR Extension. All the users will be prompted to accept the new policies you create.

Read this guide on How to Configure GDPR Compliance Extension in Magento 2 Store to setup this extension.

Here are the another resource to help you get most out of this Magento 2 GDPR Extension.

• Magento 2 GDPR Checklist – Comprehensive Guide for Beginners