Thank you for your support and kind words.
Setting permissions against Dashboard widget is not there yet. It is still in my to do list. But it sounds like you are probably not looking for this functionality.
Are you trying to get it displayed on your Dashboard? These widgets usually work against a capability. If the currently logged in user has this capability, then it will be displayed on their Dashboard. All you need to know is the capability it is looking for and enable it for the user’s role.
If you are not sure about this capability, please contact the author of the plugin which is creating this widget and ask them what capability they are looking for.