With Golf League Tracker, you can handle a rainout in a couple of different ways. You must actively tell the system when a rainout occurrs, because Golf League Tracker will not let you skip a round when entering scores. This is to prevent a league administrator from accidentally entering scores into the wrong round number.
To manage your rainouts, go to the Administration section, click on the Weekly Admin tab, and choose "Manage Rainouts". You will be taken to the screen which will explain your options for handling the rained out week.
When you cancel the round, the round is not made up, it is just that, cancelled. The system goes in and enter "scores" for the cancelled round by making everybody "absent" and giving them 0 points. This will allow you to continue with your league and enter scores for the following round.
Let's say your league is set for 16 rounds of play. Your 10th round is rained out. This means that even though your schedule is set for 16 rounds, you will actually play only 15 rounds of golf. When cancelling a round, your league dates do not change.
When you move the round which was rained out, you can push the round out to the following week (which is the most common way to do it), insert it between any future rounds, or move it to the end of the season. No matter what choice, this will extend your league by one week, assuming you play on a weekly rotation.
After you move a round, the date which was moved will then be "skipped" in the League Dates section. Let's say a portion of your schedule looked like this:
Your round on July 8th was rained out and you decide to move it to the end of the season after Round #11. Your new schedule would be:
The matchups scheduled for July 15th and July 22nd did not change, only the round numbers were moved up. The matches which were scheduled for Round #9 are now played on Round #11, and the end of your league was extended by 1 week.