ass="mt-4">Invoice Behavior</h5>
                                
                                <div class="form-group">
                                    <div class="form-check">
                                        <input type="checkbox" id="autoCalculateRentalDays" name="autoCalculateRentalDays" 
                                               class="form-check-input" {{if .settings.AutoCalculateRentalDays}}checked{{end}}>
                                        <label class="form-check-label" for=