The following statements are correct about the Actionable Relationship Center Manager (ARC):
To enable users to see the ARC, you will need to add the component for ARC to the page layout. The ARC is a Lightning component that can be added to any Lightning page that supports components, such as record pages, app pages, or Home pages. You can use the Lightning App Builder to drag and drop the ARC component to the desired location on the page layout.
ARC displays up to 5 related lists that have a configured compact layout. The ARC shows a graphical representation of the account-account relationships for a selected record, as well as related lists of other records that are associated with the account, such as contacts, financial accounts, or opportunities. The ARC can display up to 5 related lists at a time, and each related list must have a compact layout configured to show relevant fields.
The Association Type picklist controls the account-account relationship that display in the ARC. The Association Type picklist is a field on the Account Relationship object that defines the type of relationship between two accounts, such as Household Member, Business Owner, Trustee, or Friend. The ARC uses this field to filter and display the account-account relationships for a selected record. You can customize this picklist to add or remove values according to your business needs. Verified Reference: : Salesforce Help Article 3 : Salesforce Help Article 4 : Salesforce Help Article 5