如何在mapkit中显示默认的用户位置和定制的annonation视图?

I am using map kit and showing customized annotation view. One is carImage and the another one is userImage(as current location of user). Now I want to show current user location default which is provided by map kit.but unable to show it. How do I show blue circle+my car in map kit?I am using map kit and showing customized annot