Where a local authority or relevant housing provider (a “relevant authority”)—
it may make such an application to that court in relation to that person.
Where—
it may apply to be joined to those proceedings to enable it to make a parenting order application.
Where—
the relevant authority may apply for a person who is a parent of the child or young person to be joined to the proceedings to enable it to make a parenting order application in relation to him.
A person must not be joined to proceedings in pursuance of subsection (3) unless the anti-social behaviour in question is material in relation to those proceedings.