I have a number of users admins (group: "users_admin") who create users who can view content (in many groups, like "students_a", "students_b", "students_c", and so on). Is there a way to filter the users by their creators? Let me clarify: user "A" from "users_admin" create a user "S1" in "students_a". User "B" from "users_admin" creates a user "S2" in "students_a". I would like to be able to differentiate users created by "A" and "B", has anyone done that before? Is it possible? I hope I made myself clear enough; please tell me if you need some clarifications. Thanks in advance for you insights! Regards

I have a number of users admins (group: "users_admin") who create users who can view content (in many groups, like "students_a", "students_b", "students_c", and so on). 

Is there a way to filter the users by their creators?

Let me clarify:

• User "A" from "users_admin" create a user "S1" in "students_a".
• User "B" from "users_admin" creates a user "S2" in "students_a".

I would like to be able to differentiate users created by "A" and "B", has anyone done that before? Is it possible?

I hope I made myself clear enough; please tell me if you need some clarifications. 

Thanks in advance for you insights! 
Regards