Countdown with an action to start the next timer

Hi there,

I am looking to make 4 rows with 3 timers in each row 1 first timer will have a count down off 5 minuites, when this gets to 1 minuite i would like it to activate row 2's first timer, then when Row 1's timer gets to 0 to activate row 1 timer 2 to activate.

Does anyone have a starting point for me so i can build form that?

Thanks

Jonny

Excel does not have a 'Timer', it has an OnTime statement that can run code every x periods. Why do you want to do this?

Its for an experiment my sister is doing there is going.
first 5 minutes is making an item
then testing the item for 3 minutes
then teaching how to make the item for 8 minutes

and after every 4 minutes the next person starts.