These options help control the amount of transfers that are running at a given time. It is important to not run more transfers than your internet connection and/or CPU can handle. Excess downloads will be queued and will only start later when other downloads complete. Excess seeding transfers will be put into a standby-queue and will activate when other seeding transfers have been stopped (either manually or by hitting a pre-set seeding ratio limit.) Both queues are fully re-orderable by dragging and dropping in the main transfers view.

An automatic transfer queue management system can be optionally used by activating one or both of the checkboxes next to "Auto-manage slots".  This will rotate your seeds in and out of standby depending on their seed and peer counts, so that your upload bandwidth is optimized toward seeding rare/needed content with greater priority.  This feature will also auto-start queued downloads if needed to fully utilize download bandwidth (if the bandwidth throttle is enabled).

The first option will automatically start newly loaded transfers, whether loaded by .torrent file, magnet link, or new seed creation.

The second option will cause Tixati to remember which transfers were running and restart them upon next launch.

You can also set an upload ratio goal for seeding. There are separate settings for regular seeds and seeds that have been newly created locally. Once the goal ratio is reached, the upload will automatically be stopped. You can customize this setting per-transfer by right-clicking a transfer and using the options in the 'Seeding' sub-menu.