The Font Asset property determines the font of the various texts displayed within the TextMeshPro - Input Field, and the Point Size property determines the size of the text. You'll note that the Placeholder and Text children also have the Font Asset and Point Size properties on their Text Mesh Pro UGUI components. Changing the Font Asset and Point Size properties on the TextMeshPro - Input Field parent will also change the corresponding properties on the child objects.
The rest of the properties in this group are ones included within the UI Input Field.
