Form: The form that is added is to be selected. There are different fields present that can be added in the form such as the textbox, textarea, password, checkbox, radio button, select box, multiple select boxes.
Text box / Text area / Password: You can add the above form fields with similar details to be entered for the various parameters.
Checkbox, Radio Button, Select Box, Multiple Select Boxes: All parameter related to these form fields would be same. The value and the details of the different parameter which are available with these selections should be entered like field detail, field title, user editable, etc.
Date Time: The form field for date and time can be added from here which will display the calendar for selection. To add this form field you are needed to fill up the parameters which appear after selection.
File upload: You can use this to add the file upload field to the form by selecting and entering its parameter details.
Note: This is used when you want to add the note field to the form you are creating.