no, that`s not my think. i want to tell basic rule to staff

Sure, here are some basic rules you could include in the notice to staff for the canteen: 1. Only take what you need and avoid over-ordering or wasting food. 2. Take smaller portion sizes or half portions to reduce food waste. 3. Check expiration dates and consume food before it goes bad. 4. Use reusable containers and utensils to reduce single-use plastic waste. 5. Participate in our composting program for food scraps and organic waste. 6. Donate excess food to local charities or food banks. These rules can help promote food conservation in the workplace and reduce the amount of food waste generated in the canteen.