To edit a relationship:

Open the Relationships tree drop-down menu.

 

Select the relationship to be edited.

Select the Edit Relationship button.
The Edit Relationship window is displayed.

 

Edit the following field(s): 
Relationship Name.• Name of Reference (an example of a reference name is included in the field's title).
Reference Filter (it identifies the type of reference tags to use).
Children Filter (it identifies points affected by the reference tags).

Select SAVE.