There are many default Relationship Types in Sphere, but custom types can be added also.  

To add a Relationship to a Contact Record:
  1. In Sphere, select Contacts > Individuals or Contacts > Organizations
  2. Search for an existing contact record or click New to create a new contact
  3. If the contact is already existing, click the Manage link to the left of their name
  4. Select the Relationships tab, then select All
  5. Click New to create the new Relationship
  6. Choose the Relationship Category from the drop-down menu
  7. Choose the Relationship Type from the drop-down menu
  8. Fill in any Notes if desired, then either Search for the existing contact with whom they have the relationship, or type in their information to add them as a new contact.
  9. Click Save