I am attempting to send emails to participants that are registered for events. When I access Manage Events and select Configure - the option for Schedule Reminders is dithered out and not sure why. Any advice would be greatly appreciated.
This is a known issue that happens with the Shoreditch theme. It is due to a problem between Core and Shoreditch/Bootstrap, that I've written about here. You can still click the top option and then use the top tabs to navigate to the page you need.