GenJ offers several ways to navigate through our genealogical data. We can pick individuals and families in the Tree View, select entities in the Table View or browse properties in the Edit View and jump to other referenced entities.
As a navigating tool the Navigator View allows you to follow relationships of individuals very conveniently:
In the middle we see the spouse; above siblings, parents and grandparents; below children and grandchildren.
Other views opened on the same GEDCOM file will change their selection appropriately to match this.
Tip: Undock the navigator, resize it and put it in a corner of your screen.
Proceed to Record View