It's not simple or easy yet. Basically just make sure a link to each other site is in the post or comment section.

You might see "cheetah" bot around. As long as it is your article you can ignore him. He just makes the comment so that users are aware and manually check the post. If you decide to start posting in both places on the same day you can ask him to white list you in steemit.chat in the steemitabuse-appeals channel.