Hi,
It is more a question about the navigation stack of ros:
http://wiki.ros.org/navigationI suggest to follow their
tutorials to make your robot ready for navigation.
If you want to see a full working example in simulation with rtabmap, see the turtlebot3 example on this page (turtlebot3 packages are also available on kinetic):
http://wiki.ros.org/rtabmap_ros/Tutorials/MappingAndNavigationOnTurtlebot#Turtlebot3_On_Melodiccheers,
Mathieu