Enzymes take time to really work
So they would need a long wash like in a FL, not a 10 minute wash like in an older machine.
My 1969 LK combo labeled the Super Wash cycle Enzyme Super Wash which gave things an extra 4 minutes of wash at low water level before adding more water for an additional 12 minutes of washing. Enzymes were big in 69 and Sears was on the bandwagon whether the cycle gave them time to work or not and, better question whether the combo could adequately rinse enzymes products out of clothing or leave you with an itchy rash. The last LK combo had Wrinkle-Guard at the end of the dry cycle. WP used that Wrinkle Guard timer to give you the option of either having the regular 4 minute Super Wash or something like a 30 minute Enzyme Soak with the same resting and tumbling periods of the Wrinkle Guard sequence. Sadly, by then, most of the enzyme pre-soak products of the late 60s had been discontinued due to the itching problem and concern over the amount of phosphates they contained.