Not to sound like a total D*, but you didn’t need to Google anything. Just read the entire form AND the instructions? Your questions are all answered within.
In the form:
Box 4b: “. Type of Firearm to be made (See definition 1c) If a destructive device, complete item 4j”
2d(2): ” If the applicant is an individual, the entire Form 1 shall be completed except for items 15 and 16.”
2d(5): ” If the applicant is other than an individual, each responsible person (see definition 1e) for the trust or legal entity must include a completed ATF Form 5320.23″
2g: “The applicant must provide a copy of the Form 1 to the chief law enforcement officer (CLEO) who has jurisdiction over the area of the applicant’s address shown in item 3b of the Form 1. In addition, if the applicant is other than an individual, a copy of the Form 5320.23, National Firearms Act (NFA) Responsible Person Questionnaire, for each responsible person must be provided to their respective chief law enforcement officer. “