A. Assign a business division label to each contact to determine which office the contact belongs to. Users will only be able to see the contact if they are accessing the system from the specified IP address.

B. Configure a security group for each office; when contacts are added they are assigned to the appropriate security group through a shared filter.

C. Configure a security group for each office; when contacts are added they are assigned to the appropriate security group through form processing.

D. Configure a security group for each office, specify a business unit membership in the group configuration and then use a program to assign access to the target contacts.