The Maximum number of active torrents field defines the maximum number of unforced torrent jobs that BitTorrent will allow to be active before placing it on the queue. Torrent jobs are counted regardless of whether they're seeding or downloading torrents, as long as they are uploading at rates above the value specified by queue.slow_ul_threshold or downloading at rates above the value specified by queue.slow_dl_threshold.
The Maximum number of active downloads field defines the maximum number of unforced torrent jobs that BitTorrent will allow to be downloaded before making it wait on the download queue. This option only applies to torrent jobs that are downloading or are to be placed in downloading mode.
The Minimum ratio field allows you to set the ratio that you wish to reach before BitTorrent throttles the speed for the torrent job (or stops it, if you set it to do so). Setting the ratio to -1 is equivalent to setting it to unlimited. Setting this value to 0 tells BitTorrent to ignore this value and look only at the seeding time limit. This value is interpreted as a percentage. BitTorrent will throttle the seeding process only after both this and time limit have been reached.
The Minimum seeding time field allows you to specify the minimum amount of time you wish for the torrent job to continue seeding at normal speeds after it has finished downloading. BitTorrent will throttle the seeding process only after both this and the ratio threshold have been reached. This value is interpreted in minutes.
The Limit the upload rate to field allows you to set the speed that BitTorrent throttles the upload speed for a torrent job to when it reaches the seeding goal set. Setting this value to 0 is equivalent to telling BitTorrent to stop the torrent job. A change to this value affects only torrent jobs that have not yet reached their seeding goals. This value is interpreted in KiB/s, so please enter it as such.