Using iCall to Schedule a Script to run

Hi,

I have a script that when run will backup all ASM policies and push them off to a remote SMB server. I had been running this script in a TEST environment as a Cron job however the business was not comfortable with a Cron job being set up on the F5. Further reading I find iCall can do what I want unfortunately I am not sure how I implement this via an iCall. Can anyone provide me the steps required in order to run a script once a month via iCall?

Thanks in advance.