To manage both B2C and B2B customers, CK should use Person Accounts and Contacts to Multiple Accounts features. Person Accounts allow CK to store information about individual consumers without requiring a separate account record. Contacts to Multiple Accounts allow CK to associate a contact with multiple accounts, such as their employer and their personal account. Reference: https://help.salesforce.com/s/articleView?id=sf.account_person_behavior.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.account_contact_rel_overview.htm&type=5

Role hierarchy is a sharing mechanism that should be used to open up opportunity sharing to directors who oversee regional managers so they can access records to assist regional managers. Role hierarchy is a way to grant access to records based on the user's position in an organization's hierarchy of roles. Role hierarchy can grant users access to records owned by or shared with users below them in the hierarchy for objects that have organization-wide defaults set to Private or Public Read Only. By using role hierarchy, the administrator can ensure that directors can access opportunities owned by or shared with regional managers who report to them

Password Policies on the System Administrator profile is a feature that allows administrators to set different password requirements for users with different profiles. Password Policies can specify the minimum length, complexity, expiration period, history enforcement, lockout interval, and warning message for passwords. Password Policies can be used to enforce stricter password requirements for system administrators than for other users