Dynamically show or hide a field

const departmentField = getFieldById('customfield_10035');
const ticketCategoryField = getFieldById('customfield_10037');
const lineManagerField = getFieldById('customfield_10036');
const changedField = getChangeField();

switch (changedField.getName()) {
    case 'Department':
        switch (changedField.getValue().value) {
            case 'Finance':
                lineManagerField.setVisible(false);
                ticketCategoryField.setVisible(true);
                break;
            case 'HR':
                ticketCategoryField.setVisible(false);
                lineManagerField.setVisible(true);
                break;
            case 'Product':
                ticketCategoryField.setVisible(false);
                lineManagerField.setVisible(false);
                break;
        }
        break;
}