descriptors

[Daniil96Let]

Hello,
I'm trying to learn how to handle descriptors. Based on the document AN00202. #xCORE-200 MC AUDIO
For example, I understand that desc_control_identify writes “IDENTIFY Ping” to the console when clicking the Identify button in the AVDECC Entity Controller window.
I do not know whether it is possible to add a code so that my buttons appear, for example, to control the LEDs.