i believe these options aren't yet available. i think kickoff is still under pretty heavy development, and they were just able to get it stable/better performance or 4.1, but haven't yet been able to bring back the configuration options they need. i feel quite certain these options will be back for 4.2, and hope to see them sooner...
_if_ somebody does know how to configure it, do let us know. i'd like to change the height of kickoff to make it show more entrees so i never need to scroll up or down...