How can I set repeating notifications on a specific weekday on iOS?

Hello,
I am trying to set a notification to be triggered weekly on a specific day.
For example, I would like to be able to set a notification for every Monday at 9:00 starting next Monday.
On Android, I can use the date of next Monday for firetime and have a repeat interval of 7 days:
var notification = new AndroidNotification(tittle, text, firetime ,repeatInterval)

But on iOS, I can’t find how to do this.
I tried with iOSNotificationTimeIntervalTrigger and iOSNotificationCalendarTrigger, but I could not get to the same results.
Any ideas?

It should Just Work™, but it’s been a while since I fiddled with it. I forget if everything you need is built into Unity or not… some stuff certainly is.

There are also asset store packages such as this: