Make sure you have set up crossposting with the page that originally posted the video, and that the video has crossposting enabled for your page.
Go to your Facebook page (the one where you want to post the video) and click on “Publishing Tools” at the top
Click on “Videos You Can Crosspost” in the left hand menu
Click on the video you want to crosspost
Click the “Create Post With This Video” button in the lower right
You can edit (or completely replace) the description at the top – this won’t affect the original video.
When you’re ready, click the “Publish” button in the lower right to publish it to your page (or click the dropdown to schedule it like any other post).
