If you're uploading with your laptop, you will see this screen on your personal page:
Hover your cursor on the "Upload" button, you will see the following format options; the leftmost drop-down menu is the camera angles for your video; the three boxes on the right refer to the viewing outcomes that you want your videos to be presented in:
If you click on the drop-down, you will see two common camera angles; you can also customize your FOV by clicking on "More...".
At the customization section of your FOV, you can type in any camera angle you need for your video:
If you're uploading from your mobile device, you will see the upload button displayed on your page like this:
Click through, and you can edit your video in a similar process as on your laptop.