Single Notification Scheduled to Trigger Multiple Days Per Week

I know easily how to get a notification to schedule every day. I know how to schedule a notification for every monday,

But is there a method where I can say…

I want this notification to run Monday, Wednesday, and Friday at 10am every week.

I come from an IT background, so I am wishing the system was more CRON like in its flexibility.

I find sending a notification every day is too much and once a week is too little.

But I also think having to setup multiple notifications (especially with no way to duplicate an existing notification and just tweak the day) is a bit much.

Am I missing something?

Thanks!