I don't think that you can get 1 row to appear in 2 different groups, because it is only 1 row of data. CR sees it as just 1 row, and so will only print it once. If you need it in multiple rows, you need to create multiple copies, but with differences so that the copies do not print in just the first group.
This is usually not too difficult if you are using stored procedures, but if you are joining to the database tables directly then it becomes much more difficult.