A torrent becomes "visible" when it is seeded.
You need to go to their description pages and re-download the .torrent file with the "Download" button. Then open the torrent with your torrent client programme and point the download to you the data files (usually the movie) from which the torrent was created.
How exactly that is done depends on your torrent client programme. You should look at the Guides section if there is one fopr your client programme or if not to this guide, step 4.0 onwards > https://forum.gaytorrent.ru/index.php?topic=18666.0
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If you are µTorrent user, give QTM V1.8 a trial to upload. It automates the critical last steps described above.