Field instructions/ Guide Text are the extra information you can add to a form field for users to read. You can use this option to specify the exact input type you require from them. All form fields that require user input have an instruction box where you can add some additional information.
Go to the Form Designer section of your form, select a field and type the information you want to add in the Instructions box within the Edit Field panel.
Example of how to use field instruction text.
