I Have A Sears 10 Inch Table Saw Model Number 137.218073 That I Just Bought

I have a sears 10 inch table saw model number 137.218073 that I just bought this past August 2016. The manual said I had to get a 6 inch dado set to cut grooves no wider than 1/2 inch. No part number was given for this dado set in the manual.I went to the Sears Parts Direct in Santa Ana California. They had no part number for a 6 inch dado set they could order for me but they showed me a Sears 6 inch dado set being sold on E-Bay. Its Sears part number is 923175. So I ordered it.My problem is the dado set manual does not show me how to arrange or set up the necessary 2 chippers I'd need for a 1/2 inch dado cut. The manual does show how to set up for one chipper for a 3/8 inch dado groove at figure 3. The manual also shows how to set up three chippers for a 9/16 inch dado groove at figure 4.But there is no specific figure for a 1/2 inch dado groove.My question is, what is the arrangement or set up of the chippers for a 1/2 inch dado groove?