What is the best way to update Item Receipt Tolerances for a large group of items and item categorie

Hello, we are in the process of changing our Purchasing Controls to prohibit Over Receiving on certain Items and Item Categories.  We want to add Receipt Tolerances and also make sure our Requesters and Receivers cannot over receive a Purchase Order for many of our Hospital Items and Item Categories.  Currently within our Purchasing Item Attributes, Purchasing Controls / Receiving Controls we do not have the 'Reject Qty Over Tolerance' check box selected and do not have any Qty Rcvd Tolerance or % Tolerances set up.  This would be a large group of attributes to be updated so it would