scaling / multiple workers

I want to run a task every 5 seconds. I want to use multiple workers, so that if a task needs significant time, it doesn't block other tasks from running.

Should I use [multiple schedulers](https://schedule.readthedocs.io/en/stable/multiple-schedulers.html)? Or [parallel execution](https://schedule.readthedocs.io/en/stable/parallel-execution.html#parallel-execution)?

Or do I need to create entirely separate workers?