I'm trying to add a notification template using M-Files Admin. When I add the new rule, the only options I get for the rule name are the two notification templates that are already defined; other notification rules are not available for selection. Tried going to advanced mode and adding the notification rule ID number manually, but when I go back to the regular configuration UI it tells me that that's not a valid number. How do I get notification rules to show as available for selection when defining a notification template?