civiCase activity not showing in “assigned to” user dashboards

When I create or edit an activity I want that activity to show up in all the assigned “users” dashboards. That fails for me.

Am I putting it in the wrong place?

 

What I create or edit for an activity I assign it to two users:

Activity screen

 

But when I log in as one of the two users, the activity does not show up in their dashboard:

Activity Dashlet