I want to add an element to form but user shouldnt see it. I want to edit it in the edit submission field.

Dear Birkan,

Please be informed, that you can add a hidden field to a form and edit it in Submissions area later on.
Thank you.

I want to add a scale rating element, but user shouldnt see it. How can i make this?

Dear birkan,

Please be informed, that the extension does not have a functionality, like the mentioned. But you can still add a display: none; CSS rule to the field.
Thank you.