How do I configure OTR on Openfire?

Hi guys!

I’m developing an XMPP client and I want to use Openfire as server. I wanna use the OTR protocol.

How I do to configure this protocol on Openfire server?

How I do to only permits connections with this protocol?

I have searched in other questions and I have read the documentation about Content Filter plugin but I can’t find how to configure it.

I think that could be a good idea that test this functionality on my server with a full client that uses this protocol, like Pidgin or Chatsecure.

Anyone can help me with this configuration?