How do tournaments work?

[Bruiser419]

This is probably a dumb question, but I can't seem to find any info on how they actually work. Do they have to played one game after the other starting right at the starting time, or do you contact the person you playing to find an agreed upon time within a given time frame?

Any information would be very helpful. Thank you.

Bruce

[Oso]

The game starts at X time, generally people are online in these time.