You can use the Scheduled-Tasks API in PowerShell along with a config.json file for parameters input. I guess the minimum limitation is 5 minutes. A sample tutorial for very basic Schedule Tasks creation via APIs
You can use the schtasks.exe via cmd too. I could see the minute modifier limitation to 1 minute on executing schtasks.exe /Create /?. Anyways AT is now deprecated.
Anyways, I am working on a tool to behave like CRON. I will update here if it is successfull.