ALTER TABLE bookings
  MODIFY payment_selection ENUM(
    'pay',
    'provincial_visit_pay',
    'grand_lodge_visit_pay',
    'provincial_visit',
    'grand_lodge_visit',
    'not_required'
  ) NOT NULL DEFAULT 'not_required';

INSERT INTO schema_versions (version_number, version_name)
VALUES (28, 'Paying official visit classifications');