Use deep stream for custom applications

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) : Jetson
• DeepStream Version 5.0 DP
• JetPack Version (valid for Jetson only) 4.4 dev kit
• TensorRT Version : 7.1.3.0

Hi guys,
In your opinion, Is it possible to use deep stream for custom app? for example : face recognition
That’s mean I want to use decode multi-stream and one detector of deep stream for face detection, but for face recognition, the deep stream doesn’t support any model for this task, I want to know How I can integrated the face rec system to deep steam? I want to get outputs like counting and coordinates of deep stream, Is it possible?