How to set up cron?

Question

Task Schedulers

There are 12 scripts, I need them to be run in turn (Every 4 times), but I don't understand how to do it
1 - 0:00
2 - 0:30
3 - 1:00
4 - 1:30
5 - 2:00
6 - 2:30
7 - 3:00
8 - 3:30
9 - 4:00
10 - 4:30
11 - 5:00
12 - 5:30
and went from the beginning
1 - 6:00
2 - 6:30 etc. d

Answer 1

I can offer two options:

1. Create 12 cron jobs, each running every 6 hours and adding +30 minutes to each of them with the previous one.
   
2. Run one main script every 30 minutes, and at the script level, make logic so that 12 scripts run in turn