/**
  * Checking if Manager at some index $i in $request, already exists in the database or not
  * @param $request --- It is an array
  * @param $i
  */
 public function checkIfManagerExists($requestData, $i)
 {
     $managerFound = ManagersDatabase::where('email', '=', $requestData["email"][$i])->get();
     if (count($managerFound) > 0) {
         return false;
     }
     return true;
 }