Good day!

I have a bit of confusion about clocks. I try to do what I can before actually playing so I wrote out all the clocks I thought I would need but now I am starting to think that is wrong. It felt natural when people name the corps to put clocks beside them for ease later but in the Links section it sounded like the first "strike" is starting the clock then from there you advance it. Is this the same for harm clocks?

Another way to ask is - Do clocks fill up with 5 advances or 6?

Thank you kindly