How to attach transaction codes to Area Menu

We know how to create transaction codes. We can use the transaction code SE93 ( Maintain Transaction).
Module pool programs/On-line programs must be attached to a transaction code to execute them.
Report programs (executable programs) can be executed directly without attaching them to the transaction codes.
But in real time, we do create custom transaction codes both for module pool programs/On-line programs and report programs.
Module pool programs and on-line programs are one and the same, where we do create screens using screen painter (SE51).
In real time business scenarios, after creating transaction codes, we need to attach them to Area Menu. End users can easily access the transaction codes if they are attached to Area Menu.
Area Menu is nothing but starting screen where in the left hand side we find menu.
The transaction code to maintain area menu is SE43.
using SE43, we can attach our custom transaction codes to the area menu. Please explore how to create nodes and subnodes under menu using SE43.