For your first question, the actual answer data for survey questions are stored, one answer per row, in the FRS_SurveyResults object. It's probably possible to set automation in that object that would find the situation you want an email sent to the manager and trigger it. The design would be fairly complex though as you'd need to filter just to the one question and then map through the other fields to the Incident / SR / etc it's related to and find the appropriate Manager and customer information.
As far as the second item, you've found all the options for the radio button option as far as text input goes. If you want a large text field related to a radio button question you'll need to add another question of text or essay type and formulate the question to ask about their answer to the last one, i.e. - "Please explain your answer on the question above"
For both of these situations, they sound like they would be great ideas for OOTB functionality and I encourage you to log one or both of these ideas to the enhancement request "uservoice" portal:
You can submit ideas and show support for ideas that other customers have submitted by voting for them. The more votes an idea receives, the more visibility it receives with our Product Management team. The Product Management team will evaluate all ideas that reach a voted point threshold. When there is an update on the status, an Ivanti product manager will reply to the idea or update the status so that all interested parties are notified. It is therefore key that you as a customer raise new or vote on exiting ideas to be kept looped in with future progress.
When you create an idea, please describe both the problem or pain you're experiencing as well as your suggested solution to that problem. It can also be useful to describe specifically how you would use the new feature if it were built, as well as how you are dealing with the problem today. The better your explanation and logic, the better your chances of attracting positive votes from other users and ensuring a response from Product Management.
Thanks in advance for your feedback.
If you have any other comments or questions please do not hesitate to contact me.
Ivanti Community Ideas Homepage: https://community.ivanti.com/community/enhancementrequests