you have to click the head icon in the assignment box to get the advanced assignments pop up window to display    

I tried to do it in advance assignments and it didn't work with the enter button. Could only get it to work in the summary panel.

That side panel you have up is what I'm talking about. It's called the summary panel.   If you click on one of the persons already in your assignments area, it should give you a pop up in that area that you can use to assign more users using the enter button to select.    (tip: in experience league...

If you have the task selected and open the summary panel from the project screen the popup will allow you to assign to people using the enter button.    

dates are formatted as YYYY-MM-DD I believe.

I haven't noticed one. I just tested and was able to delete a comment from 2021.

Sometimes resetting the notification will help. You can try turning it off and then on again for the group or system.    Also, make sure the project isn't in planning. It won't send notifications for projects in planning.

There is a template you can use for it but basically it's triggered off a tracked field change.     

I have reports that run with "admin rights" so that users can see all data in the system that need to see and those values are all replaced with No Access. Unfortunately, I have zero time available to update every report that was impacted and then have to consider the use case where someone looking ...

Are you asking how to do this natively in the tool? There isn't a way.   Or are you asking how to do this with Fusion?