This is a cheat sheet that shows a relationship between parent and child elements of Apache JMeter.
Here, you can see all 12 elements on the screen, which are connected through some lines and arrows. The tail of the arrow is at the parent end, and the head of the arrow is at the child end. So if you start with the tail, follow the line and stop at a head, then that will be the child of a tail-ender parent.
Example:
If you want to know all the child elements of the logic controller, then start with the tail and follow all the line paths wherever they go. Make sure the line ends with a head. If it ends at a tail, then that will not be a child of the logic controller. You can find that there are a total of 8 child elements of the logic controller. Sampler, Config element, Pre Processors, Post Processors, Listener, Timer, Assertions, and Logic Controller itself. Because you can add a Logic Controller element under another Logic Controller.
In case an element has both a head as well a tail, then give preference to the head. It means that a particular element is a child element. In the above example, you can see the sampler element has both a head and a tail end. But we have given preference to the head.