Attachments
First you need to be approved by the admins before you will see this feature. You also need to make sure your email is verified.
Once permissions are enabled on your account for uploading you will see these new options
Upload is plain and simple
Fill in the title Description select a category and UPLOAD it
Video importing is also available here
Just paste in the link select a category and click share and it will download it and import it to your channel.
Embedding a video is just what it sounds like a way to embed a video from other platforms like Youtube.