NEW EVENT (ctrl+N)
You can either click the New button directly at start, or create a new event via File/New in the main interface.

Our advice is that you use eventnames in the form: YearMonthDay_descriptive name. Once an event has been created, it can be opened in the usual way.

Note that you should avoid to use event names that have previously been used by BOS as it could result in a mix of old and new files (as the files will get the same name if the event names are the same).