Custom Field: Input Option: Single Checkbox

As a librarian
I want to create custom field with the input type = single checkbox
So that I can track information

Requirement

• Has standard fields: Label, Is required, Show/Hide, Help text
• Label is the option
  - Allow user to select a default option (optional)
  - Allow a user to delete an option THAT is not the default value
  - When an option is deleted then set to [Null] if no default is set OR set to the default
  - When a user changes the default, do not change any records that have the default set AND saved

Acceptance Criteria

TBD