Grouping/tagging registered faces

Is there a way to organize the registered faces into groups, and then instruct DeepStack Face API to recognize the faces only within the specific group?
Ideally, I want to add a tag parameter (e.g. ‘friend’, ‘family’, ‘employee’, etc.) when registering a face, and then supply a tag (e.g. ‘family’) to recognize only the faces that were registered with the same tag value.

That would require new functionality in deepstack