Is there a way to tie routing rules to specific responses in a custom form or just the whole request? i.e. if someone chooses the "Press Release" option in a dropdown, can we send a notification to the PR person? Or, can you only apply routing rules to the whole request?
I don't think you can do it based on specific responses within the custom form. You can create different routing rules for different Queue topics, so if you attach a custom form to a particular queue topic, you could route it differently.
If you go to the Queue Setup tab, if you have routing rules set up, you will see under the Queue Details an option to assign a default Route. When you create a Queue Topic, you also have an opportunity to assign a default Route to that queue topic.