If you are trying to add magnet links to rutorrent seedbox , the easier method would be to download with remote torrent adder chrome or firefox plugin you can find a tutorial for it on our website . If you want to add a magnet link manually here are the steps.
Step 1. Log into your rutorrent web client.
Step 2. click on the add torrent button and copy the magnet link url and paste it in the add Trgate URL tab.
Step 3. Click on Add Url and it should load in yout seedbox.
Here is a screenshot picture tutorial for adding magnet links to rutorrent seedbox.
Hope this helps.
If you have any query please feel free to ask in the comments Tab