1. Create Custom Preference Attributes in Another CloudThe Salesforce Integration v2 allows you to create custom attributes in another cloud that map to corresponding Marketing Cloud Preference Attributes.
2. Create Preference Attributes in Marketing CloudFor each Salesforce custom field, create and map the corresponding Marketing Cloud Preference Attributes in the Salesforce Integration v2.
3. Map Marketing Cloud Preference AttributesAfter you create preference attributes for Salesforce Integration v2, map MarketingCloud Preference Attributes to the appropriate Salesforce field.