Adapt my formBuilder Javascript

You must have used formBuilder library before [login to view URL] In my usecase, my fields are predefined: example First Name, Last Name, Birthday, etc. I use [login to view URL] to prepopulate the stage with only the mandatory fields and let admins drag and drop any extra fields they like endusers to complete. I would like to: 1) Prevent adding a field twice 2) Prevent certain fields from being removed. It seems like disabledFieldButtons works on type basis rather than field name. 3) Hide 'name' field. These should be locked for Database purposes 4) In select type fields, hide "value" but inherit the same value as "label"