Use    to create Family Relationships.

Create relationship dialog (1 table)
(Click on the image to enlarge)

Select the folks to include in the relationship with Select Parent/Spouse and Select Child
Existing families the persons belong to are listed.
Use Create New Family for this relationship to create a new Family


Click (1 Table)   to view an alternative Dialog for creating relationships.
Click (2 Tables)   to view original Dialog for creating relationships.

The two table dialog allows to select 2 people at the same time.

Create relationship dialog (2 tables)
(Click on the image to enlarge)


The Generation chart, is very helpful, for cleaning up relationship errors.
In this case, multiple families were created for the same people.
(as identified by the extra lines on the diagram.)



Click on the lines to a family, or Modify relationships
(Click on the image to enlarge)

For example to fix an error use Right Click ⟶ RelationShips ⟶ Remove Person from Family
After you make changes, Right Click ⟶ Refresh to see changes in the chart.