How to instatiate a prefab with all it's characteristics?,Question about how to Instatiate a prefab with all it's characteristics

There are two places you can change settings on a prefab. You should change setting in the Project view, NOT in the Hierarchy view.

Do this:
The prefab can be found in the Project view, and changing settings here will apply to to your instantiated gameobjects, and will also change all current gameobject in the scene with this prefab connection.

The other way
It sounds like you are trying to change a single gameObject. The Hierarchy view shows each individual gameobject in the scene. Changing settings here will only modify this single gameobject. You can apply these settings to the prefab by clicking "Apply" near the top of the Inspector, assuming the connection to the prefab is intact. Warning: This will change ALL gameobjects in the scene with the same prefab connection.