RM has two methods to help you see relationships within the database. They are complimentary, not mutually exclusive.
1 - Tools > Set Relationships
Use the [Change] button to select the base person for calculating relationships
Now the Family view will show, in the lower-left corner, the relationship to your base person
You'll need to periodically re-run Set Relationships, since RM doesn't do a live update of relationships as you add new people
2 - Reports > Lists > Kinship List
This will calculate and list all of the blood relationships to your base person, throughout your entire database
Ok, I get the set relationship thing, but it doesn't seem to do wives of cousins, etc. That is a huge flaw in the system I would think. For example, if I want to forward my database to a cousin, I would like to go through it first to delete all the people that they are not related to but I am. But I certainly don't want to be deleting wives of family members and such.
I generated a kinship list, it seems to do what I need but not as handy as having it right there on your screen.