Enable admin setting user for a system

app/Http/Controllers/SystemController.php

@@ -16,7 +16,7 @@ use Illuminate\Support\ViewErrorBag;
 use App\Classes\FTN\Message;
 use App\Http\Requests\{AddressMerge,AreafixRequest,SystemRegister};
 use App\Jobs\AddressPoll;
-use App\Models\{Address,Echoarea,Filearea,Netmail,Setup,System,SystemZone,Zone};
+use App\Models\{Address,Echoarea,Filearea,Netmail,Setup,System,Zone};
 use App\Notifications\Netmails\AddressLink;
 use App\Rules\{FidoInteger,TwoByteInteger};
 
@@ -49,6 +49,10 @@ class SystemController extends Controller
 				->transform(function($item) { $item['active'] = Arr::get($item,'active',FALSE); return $item; });
 
 			$o->mailers()->sync($mailers);
+			if ($request->post('users') && array_filter($request->post('users'),function($item) { return $item; }))
+				$o->users()->sync($request->post('users'));
+			else
+				$o->users()->detach();
 
 			return redirect()->to('system');
 		}