How can I choose the default slot mate type to be 'centered'?

Square Slot Mate solidworks slot mate but, as soon as I added draft to the slot the mate failed when I went to redefine ©2002-2024 Dassault Systemes SolidWorks Corporation solidworks slot mate David Planchard Tutorial: Slot Mate 11-1 Create a Mechanical Slot mate Insert a slot mate between the Flange bolt and the right side slot on the Guide 1

solidworks tab and slot I have a pin with a slot mate shown with the green arrows I need this pin to additionally have a slot mate in the square hole