How to Refer to the Centre of Components
By default the row and/or column reference for a component symbol is to the insertion point of that symbol, which is usually the top/left corner. You can choose instead to have the reference to the centre of the component symbol.
Go to the Options tab page.
Tick Refer to centre of component if you want the row and/or column reference to be to the centre of the component symbol on the drawing.
Untick this option if you want to refer to the insertion point of the symbol - the top/left point.