Click the drop-down button and select the alignment of the Client ID within the current element.

Auto The Auto option justifies the Client ID based on the Key Type. If the Key Type is Numeric or Mixed, the Client ID will be right justified so that the decimal places will line up. If the Key Type is Alpha, the Client ID will be left justified.
Center Select Center to center the Client ID horizontally within the element.
Left Select Left if you want the Client ID left justified within the element.
Right Select Right if you want the Client ID right justified within the element.