Since you want to schedule blackout alerts on weekend, you can configure business hours to achieve that. Go to Settings–>Report Settings–>Business Hours and uncheck Saturday and Sunday. (This will remove Saturday and Sunday from business hours).
Next, check the checkbox for "Generate Alarms (Performance) during business hours only". Here is a screenshot
Please let us know if you have any questions.
Thanks for reply ..
But this setting will blackout all alerts on weekend. I want to blackout for only few alerts..
Please let me know if there any other option available in RUM console.