To add an alert message to a product on the Table Ordering app:
Go to Products > Products and edit the desired product.
Enter the following, changing the italicised words to the desired text.
First line/title: <p style="background-color:#dc2b03;color:white;text-align:center"><b>This is the Alert Message! </b></p>
Second line: 2<p style="background-color:#dc2b03;color:white;text-align:left"><b>This is the second line! </b></p>
3. Click Save.
The alert will appear on the product on the Table Ordering app.