You can set up Marketing Cloud Account Engagement yourself to sync with Person Accounts.

You cannot set up Marketing Cloud Account Engagement yourself to sync with Person Accounts. You

need to contact Marketing Cloud Account Engagement support to enable this functionality, as it is

not available by default. Person Accounts are a special type of account in Salesforce that combines

the attributes of both accounts and contacts. To sync Marketing Cloud Account Engagement with

Person Accounts, you need to follow some additional steps, such as enabling Person Account

Syncing, creating Person Accounts instead of Leads, and adding Marketing Cloud Account

Engagement data to Person Account layouts12 Reference: 1: Person Account Syncing with

Salesforce2: What To Know Before Using Person Accounts in Marketing Cloud Account Engagement &

Salesforce