To update an existing, published Action Plan Template, the Admin should clone the existing Action Plan Template and make any necessary changes on the new Action Plan Template. This is because published Action Plan Templates cannot be edited directly or set to inactive4. Cloning an Action Plan Template creates a copy of it with a new name and ID, which can then be modified and published4. Verified Reference: 4

Explanation
To set up the new record types for Person Accounts, the administrator should configure Individual Record Type Mapper custom metadata. The Individual Record Type Mapper is a custom metadata type in Financial Services Cloud that defines how records are created when using certain features, such as Einstein Data Capture or Salesforce Inbox. The Individual Record Type Mapper maps Person Account record types to Individual record types, so that when a new Individual record is created from an email or calendar event, it automatically creates a corresponding Person Account record with the same record type. To configure Individual Record Type Mapper custom metadata, you need to go to Setup > Custom Metadata Types > Individual Record Type Mapper > Manage Records and create a new record for each Person Account record type and its matching Individual record type. Verified References: : Salesforce Help Article [8] : Salesforce Help Article [9]

In an existing Financial Services Cloud org using the individual account model, custom objects are used to represent other assets, liabilities, and goals. These objects are related to the Account object via lookup relationships. For example:
The Other Asset object is used to represent non-financial assets owned by an account holder, such as real estate properties, vehicles, or jewelry.
The Other Liability object is used to represent non-financial liabilities owed by an account holder, such as mortgages, loans, or taxes.
The Financial Goal object is used to represent financial objectives pursued by an account holder, such as retirement planning, education funding, or debt reduction. Verified Reference: : Salesforce Help Article [10] : Salesforce Help Article [11] : Salesforce Help Article [12]