Program, Class, Roster, Practice Relationship

[Jacob Kretz]

I'm new to SportsEngine administration, and new to our swim club board.  I'm trying to understand the relationships between the different SE motion groups.  Currently from a human point of view we have a single "club"/"team" that comprises all age groups. We have four seasonal sessions each year for which registration occurs. Our team is divided into groups based age and ability (not exclusively either though). During registration, the group is known to the member registering.  From my investigation, it looks like members register to a "roster". But I don't see how rosters like to program, classes, or practices.  It also looks like rosters have calendars that are separate from practice calendars.  Any guidance would be appreciated.