JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You have to add it as a field, you can add the text area field and hide it from the form view:
This hidden field will be visible if you edit the submission in the form submissions page. Here's how to view your form submissions page:
To edit the submission, simply click "Edit" button in the page:
Or, you can integrate your from to Google Spreadsheet and add your notes in the sheet row. Here's how to integrate: