Currently, when using a calendar style list, the order is sorted by the date/time of the Start field & allows for showing oldest first or newest first.
In the case where several events occur at the same time, it would be helpful to have a secondary sort feature that allows for additional sorting options beyond the start time.
For example, a sports league that has waves of games where 5 games start at 5pm, 5 more games start at 6pm, etc. In this case, it would be helpful to sort by start time, but then by field #. Without this, the games appear in random order which isn’t as helpful.