Hi, 

Have you considered subscribing the managers to the dashboard via the API instead?  So you would set up the refresh schedule via the API and set the managers as notfiers using the API. These are the docs of how to do it via the UI https://docs.databricks.com/aws/en/dashboards/schedule-subscribe and here are the API details of how you would do this. https://docs.databricks.com/api/workspace/lakeview/createsubscription. The notificaitons has a limit of 100 subscribers so you may need to do it as multiple.

For feature development if you contact your account team they will be able to tag your account with the feature request and this will mean you'll get updates about it. I hope this helps.

Thanks.

Emma