We've set our forum so that everyone must register to use it. Is there a way during the registration process that we can show our "terms of service" that the user would click to accept?
Sorry, we don't have this feature. Nabble registration is shared among all forums and we can't know which forum the user will post to. The best alternative for you is to add a bold/red warning to your forum description to remind users about those terms. Does that solve your problem?