To create a post for TikTok, navigate to Publishing Tools from the left rail > Create a Post, and select the TikTok account.
Enter details about the video in the text field, and add your video by either dragging and dropping the file onto your post, or browse files from your computer.
Once the video is uploaded, you can select the Privacy Level from the dropdown: Public, Mutual Follow or Private. You can also decide to allow comments, stitch or duet.
When you're satisfied with your post, you can either schedule your post for later by clicking the gray clock icon then clicking "Schedule now" or click Post Now.