Hi everybody, first of all I really liked Opigno but I have some questions about user management. It is little bit confusing, I did research about it but I couldn't find what I need. Let me explain what I need first. Lets say I have 5 different groups and I want to assign managers of each group. (Who can add students to their groups but can not see other groups' students, only they can see their students). Is there a way to make this happen? I played with it (classes, organic groups, etc. ) but I couldn't make it. Honestly I didn't understand how groups or classes work (PS. I have read opigno guide too still no luck :/) Thank you.