1. When a zombie enters the restaurant click on him and then click on a table to seat him. 2. The zombie will signal when he's ready to order. Click on him to take his order. 3. When his food is ready click on the food to pick up the order and click on the zombie to serve his food. 4. Collect the money on the table after the zombie is done eating by clicking on it. Try to wait on all zombies in a timely manner or they will become angry. You can upgrade your menu items and buy other items between levels.