I don't think, that you can make sure that everyone receives the notification by an administrative setting. If your users do not look at the questions, this is more a cultural problem, that you want to try with software. And this usally does not work good.
In my opionon there are two ways to achieve what you want, but both includes your users.
* Every of your users can use the "Watch All" Function and will then be notified of new questions.
* Or you tell your users, that they should have a look at the questions regularly.
Hi All! We’re excited to share the launch of an announcement banner that lets Jira site administrators communicate directly to their users across their Jira Cloud instance. ...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events