You can also define, if before autorouting a fanout pass and after autorouting a postroute pass for reducing the via count and the cumulative trace length should run.
The postroute pass may take a very long time and can be stopped by clicking the left mouse button.
In a fanout pass the connections will be routed only till the first via. That may be useful on boards with many layers and ball grid arrrays.
The detail parameter button opens a window, where you can adjust the individual costs used in the autoroute algorithm.