I see his name and your mom's name on your list but they are not linked to each other. Not sure if that is what you mean.
To link these people - go to any one of them, across the top of the profile, click the tab that says EDIT.
Once you get that screen - you will see links to
add/remove/edit Spouses or add/edit/remove Children or parents etc.
For example: If you open Randolph, click edit, choose add spouse.
Enter Berniece's information on the page that comes up. At the very bottom you may get a message that says Randolph is also the father of Kathy x. Check that box.
You should then get a screen that has 'matches' to Berniece. Check the one that you already entered and that will link them together.
Always look for the SAVE button - when I was learning, I sometimes forgot to click that too, and had to do it all over again!.