The timer results are grouped by lap times. Therefore it's very important how you name the lap time if you want useful grouping.
Each timer has two kinds of users: operator (green) and observer (red). Only the operator can start/stop the stopwatch, edit stopwatch and edit lap times. The function of the observer is self-explanatory.
SyWatch is ment for multiple users at once.
It can be and it was used for small races (six hour long trail running race).