Tyflow tips?

[fixeighted]

I need to create some fireworks for a stadium and they are fairly simple but I'm just thinking about positioning and timing.
I've not used Tyflow much, so any pointers appreciated. The large burst type are easy enough but....

What I want to do in the simplest way is to have a ring of single rockets that detonate sequentially...say 3 seconds apart.
These need to emit from geometry which looks easy enough to specify.
I guess I could have a flow for each and offset them but is there a way to do all the timing offsets in one flow?

[pmrenner]

This video by Allan McKay actually walks you through the basics and happens to demo fireworks as the example
https://www.youtube.com/watch?v=Ip0lb50A39U

[fixeighted]

Thanks but that doesn't cover what I need. I have watched it a few times just to familiarise myself with the general workflow.
If you can imagine a circular array of faces which emit one particle each at birth, then I want to emit in a timed sequence.
I've been trying all day but can't quite nail which parameter controls something like this.
Actually I'm having trouble even with multiple TyIcons and getting them to emit one particle each at exactly the same time....some progress but not as I need it to be.