Group changes/moves for athletes usually occur after championship meets or end of the season, three times per year. However, they can also occur as appropriate throughout the year as determined by the coaching staff. For some athletes there will be a "cross-over" transition period during the move-up where the swimmer will remain with their primary group but attend a few practices each week with the new group they will join until they adjust to the new workload. Periodically, some swimmers may be invited by special request to attend a higher group practice. This must be a mutual decision between all staff members involved and the PLAT head coach.