How to Add Users to a Single Group on new User Creation/addition in Azure Active Directory?

Hi All,

           I am fetching all the users from the Azure Active Directory by using the Group Id in MY Microsoft flow.Now my requirement is if a  new user is created/added  in Active directory then i need to add the user into a Group automatically/dynamically .Can anyone please let me know what will be best approach to do it,please provide any link if that can help me.