All Kent Code Updated

app/Models/InvoiceChargeGroupItem.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class InvoiceChargeGroupItem extends Model
+{
+    protected $fillable = [
+        'group_id',
+        'invoice_item_id',
+    ];
+
+    public function group()
+    {
+        return $this->belongsTo(InvoiceChargeGroup::class, 'group_id');
+    }
+
+    public function item()
+    {
+        return $this->belongsTo(InvoiceItem::class, 'invoice_item_id');
+    }
+}