Hello. I created a few surveys that I would like all of my registered guests to be able to take once each, but I don't want to send an invite email. I just want to have a link on one of my registered member's only pages so my registered users can click and take the survey. If they have already taken the survey, I want to display something that says they already took it.

How do I need to structure my URL for this?

How can I find out whether they already took a survey so I can show that notice instead of the link?