CONTACTLINKS
ContactLinks allows you to create links between contacts so that you may quickly go from one contact to another. With ContactLinks, you may create one-to-one relationships (like a spouse) or one-to-many (like team members).
Create one-to-one or
one-to-many relationships between your contacts
For each relationship you want to create (you may create as many as you would like), ContactLinks adds a couple of buttons to your layout, so linked contacts are only a mouse click away.