How to set Task Scheduler time to run a certain task per minute?
To run a scheduled task per-minute, use Cron-style in Plesk > Tools and Settings > Scheduled Task > Add Task > Run section.
Cron-style in Task Scheduler works exactly the same way and uses the same syntax as regular cron on a server.
For example, to set a task to run every minute, set Cron to * * * * *.
If it's required to run task every 30 min - set 0,30 * * * * or */30 * * * *. First one will run at minute 0 and 30, and second will run every 30 minutes since cron service restart.