The document describes 5 different customer processes for food service:
1) Service at a laid cover where customers are served at their table.
2) Assisted service where customers are partly served at their table and partly self-serve.
3) Self-service where customers serve themselves from buffets or counters.
4) Service at a single point where customers order, pay, and receive their food at a counter.
5) Specialized service where food is delivered to customers in locations like hospitals, hotels, or vehicles. Various types of specialized services are also described like room service, trolley service, and home delivery.