If you hit help on the group tab you'll get more information on each field.
Groups are a very special way of organizing the drivers and calculating the standings. They were originally put in to show you could run an entire HOPRA style race event within RC. Since then people use them for all kinds of things, but they're not terribly common.
The min advancing number in the group tab specifies how many drivers from each group should be put to the top of the leader board regardless of their actual performance. For example, if it's set to 1, and you have 3 groups, the top 3 drivers on the leader board will be 1 driver from each group even if the first group had all the drivers with the best times/lap counts.
The event configuration itself controls how many drivers qualify to move on to the next race in the event. In my example above, if you wanted one driver from each group in your next race to compete in a final like race you'd set the number of advancing drivers to 3 in the event itself.
Groups are a very special way of organizing the drivers and calculating the standings. They were originally put in to show you could run an entire HOPRA style race event within RC. Since then people use them for all kinds of things, but they're not terribly common.
The min advancing number in the group tab specifies how many drivers from each group should be put to the top of the leader board regardless of their actual performance. For example, if it's set to 1, and you have 3 groups, the top 3 drivers on the leader board will be 1 driver from each group even if the first group had all the drivers with the best times/lap counts.
The event configuration itself controls how many drivers qualify to move on to the next race in the event. In my example above, if you wanted one driver from each group in your next race to compete in a final like race you'd set the number of advancing drivers to 3 in the event itself.