1.To find handrail models, open the Model Library on the left, you could find them under the "Structure - Railing" catalog. Or you can also search with the keyword "handrail".
2.Under the 2D view (or Plane view, shortcut key: 1), you can switch the current floor level to the 2nd floor in the Floor Manager from the bottom left corner.
3.After switching the floor level, you can drag and drop the selected handrail model, and place it into the appropriate position. You can also adjust its size in the property panel on the right.