Create and modify incremental time series and their entries using IncrementalTimeSeriesFor.Increment.
There is no need to explicitly create or delete a time series.
A time series is created when its first entry is incremented.
A time series is deleted when all entries are deleted from it.
You can add a single incremental time series entry at a time.
Note, however, that you can Increment as many times as you need to before calling
session.SaveChanges, to create multiple entries in a single transaction.