Relationships between 2 full constituent records of the same type:
All phones and emails must be edited on the Bio1 or Org1 tabs of the main constituent records. No contact information can be edited directly from the Relationship record.
Relationship-specific contact information, such as a direct office phone number or work email address for an individual at their workplace can be edited on the relationship record. Other phones that are not specific to the relationship need to be edited on the Bio1 or Org1 tabs of the applicable constituent record, and will appear locked on the relationship record. The Source Record field will help identify where you are able to edit the locked contact information.
For any relationships between a constituent and a non-constituent:
Contact information can be edited on the relationship record itself. If that relationship is ever promoted to be a constituent, their existing contact information from the relationship will be added to their new constituent record, and at that time it will become locked, or shaded in yellow, on the relationship record.