code: def add(TargetGroup, NewMember, Config=None, Args=None):
    r
    Member = Task(NewMember, Args or {}, Config or {}) if isfunction(NewMember) else Group(NewMember, Config or {})
    ParentMembers = TargetGroup.__ec_member__.Members
  
    ParentMembers[Member.Config['name']] = Member
  
    alias = Member.Config.get('alias')
  
    if alias:
      ParentMembers[alias] = Member
docs: r"""Adds members to an existing group.
  
    Args:
      TargetGroup (Group): The target group for the addition.
      NewMember (Group / Task): The member to be added.
      Config (dict): The config for the member.
      Args (OrderedDict): ArgConfig for the NewMember, if it's a task (optional).