Good question see the below pictures with descriptions next to them.

 - This means that the client is waiting to be served and you don’t have all the dishes cooked for the order. Press on the table to take the client's order.

- This means that the food is ready to be served to the client by the waiter. You need to press on this and serve the food to the customer by dragging it to the table.

- The SOS symbol means that you or a fellow Chef has requested help in preparing the dishes for a table order

 - This means that the client has finished their meal and are ready to pay. You need to press on the table to collect the gold coins.

- These both mean that you have an item sold in the Social Market. Quick go collect your coins.

- This means that you have a delivery parcel for free waiting for you. What did you get?!

- You have a free Wholesale Delivery and the Merchants have some deals for you.

- This means a friend needs assistance, tap on the button to see who needs help and visit their restaurant.

- This means you or a fellow Chef has requested help in the Vineyard.

- This show the thumbnail of another player has helped you, if you tap on this, you can also visit the players restaurant to see if they need help too.

- The SOS symbol in Chillout Events means you or another player needs help completing an event.

- This means that you have a dish to upgrade in your Academy, go now and make amazing food.

- This means you have collected enough Blueprints to craft a Decoration.

- You need to head to your kitchen and prepare some dishes that are required to serve your clients.

- Your food is cooked and ready to collect!

- Your Chef has prepared a new meal!!