Hi, Eric. If you merge your profile with the profile of you on my tree, you will see many of your ancesters and descendants. I traced members of your family through documents on Ancestry.com. I also corrected some mistakes as there are family members of different generations with the same names. If I find more, I will let you know.
Yours,
Joseph D
Hello Eric. On the main Geni row of tabs on the top of the screen, choose tree. Find Henry Hermann Charles Rogowsky Jr. His entry is a rectangular shape with information in the box and there is a "+" sign on the bottom of the rectangle. This is the button to add family members. If you click over the "+" it will bring up a bunch of choices to add (add mother, add father, add sister, add brother, add son, add daughter). Click over who you wish to add and proceed filling in their data. Hope that helps!