How to make nested tables in flask-admin?

Question

Flask

I have a model

class User(Base):
__tablename__ = 'user'
id = Column(Integer, primary_key=True)
name = Column(String(100))
group_id = Column(Integer, ForeignKey('group.id'))
group = relationship( " Group", back_populates="user" )

class Group(Base):
__tablename__ = 'group'
id = Column(Integer, primary_key=True)
name = Column(String(100))
user = relationship( 'User', back_populates=' group', lazy=True )

admin = Admin(app, name='microblog', template_mode='bootstrap3')
admin.add_view(ModelView(User, db_session))
admin.add_view(ModelView(Group, db_session))

Now it's just two tabs, in the first group, in the second user and a drop-down list of the group in it. But I want to do this - I go into one group and see tables with child users.
How to do it?