update

resources/views/lot/add.blade.php

@@ -31,6 +31,20 @@
                             </div>
                         </div>
 
+                        <div class="form-group row">
+                            <label for="numcols" class="col-md-4 col-form-label text-md-right">{{ __('Number of Reference Columns') }}</label>
+
+                            <div class="col-md-6">
+                                <input id="numcols" type="text" class="form-control{{ $errors->has('numcols') ? ' is-invalid' : '' }}" name="numcols" value="{{ old('numcols') }}" required autofocus>
+
+                                @if ($errors->has('numcols'))
+                                    <span class="invalid-feedback" role="alert">
+                                    <strong>{{ $errors->first('numcols') }}</strong>
+                                </span>
+                                @endif
+                            </div>
+                        </div>
+
                         <div class="form-group row">
                             <label for="image" class="col-md-4 col-form-label text-md-right">{{ __('Reference Image') }}</label>