To add a dish in C&C Daily Diet Catering Management Software V8, you need to follow these steps:

1. Open the software and enter the main interface.

2. Find the Basic Data button in the main interface and click the pop-up Basic Data page.

3. On the Basic Data page, select Food & Beverage Portfolio Management.

4. On the Food & Beverage Combo Management page, click the Add button, and enter the dish name, dish code, dish details, and other relevant information.

5. Click Save button to finish adding the dish.

When the above steps are completed, you have successfully added a new dish. It is important to note that different restaurant management software may have different operating interfaces and operating procedures, and the specific operation of the software you are using prevails.