vROPS 6.0 Custom Report Schedule

By default there is option to generate reports at an hour interval , Have someone explored the options to increase the frequency of creating such reports i.e. 15 min or 30 min.

I want to create a schedule for generating reports after every 30 min but it seems that it is possible only at one hours interval

Custom Reports - Define Schedule - Start Hour -End Hour

Thanks

NiranY