ADL Self-Performance

[SPNHKATE]

Could someone please clarify why (for example) Eating should be charted as extensive assist of one person (or 3/2) if a resident is able to feed themselves part of a meal but needed assist to finish the meal???  The part which I have difficulty understanding is that 3/2 means weight bearing assist of one person, and feeding a person does not require bearing weight!!??  I checked the manual out and it does not explain.  Thank you for your input.