Dear Sandra and Ross,
I created a duplicate of this years student application form, to be used for mid-year enrollment.
After going to System Admin/Form Builder/Edit Form/ Design, I was unable to edit or delete any of the fields.
I tried creating another form and after creating a page, I was unable to add any fields or delete the form.
System info is below.
System Overview
Gibbon Version: v28.0.01
PHP Version: 8.3.14
MySQL Version: 10.6.20
MySQL Collation: utf8mb3_general_ci