Game timings

I've been playing around with this for awhile now, and I can't seem to get anything to work right.

My map has one cp. I want the "game time" to last 10 minutes.
At the end of ten minutes, whoever won the most rounds, wins, unless it's a tie, then I want it to go into overtime until the next cap.

All I have been able to do is get the timer to restart after each round. Even if I choose for it not to restart after each round, it still does.

Any ideas?

Anyone know of a place that I could find this information then?

Awesome! let me know if you come up with anything.

Just bumping this to the top, in case anyone has come across any information.

Or perhaps does anyone know of a good tutorial on timing and cp settings?