Twitter is experimenting with a new feature that allows two accounts to co-author a tweet. The company is calling it a “CoTweet,” which it’s now testing with “select” accounts in the United States, Canada and Korea.

With a CoTweet, two accounts can be linked as the author of a single tweet, which will appear on both accounts’ timelines. Much like the collabs feature introduced by Instagram last year, CoTweets seem to be geared more toward brands and creators than the typical Twitter users.

“CoTweets help authors share the spotlight, unlock opportunities for engaging new audiences, and enhance their established partnerships,” Twitter explains on its website. The feature was first spotted earlier this year by reverse engineer and developer Alessandro Paluzzi, who shared some details about it back in February.

Now, Twitter has expanded the test, at least for now. A Twitter spokesperson said that CoTweets is currently a “temporary experiment,” but didn’t indicate if, or when, the feature may be more widely available. “We’re testing CoTweets for a limited time to learn how people and brands may use this feature to grow and reach new audiences, and strengthen their collaborations with other accounts,” the spokesperson said.