Let me see if I understand. You have a forum, maybe called "Questions." Then, let's say 10 students ask a similar question, and this tutor wants to reply with the very same answer to all. Then, a day passes, and 5 more students ask the same question, and this student wants to reply to all, but just the 5 new topics, not the first 10. And then on the next day, 5 more students ask 5 different kinds of questions, and this tutor doesn't care, they want to give the same response to everyone. Hmmm, somehow this doesn't seem logical. Am I missing something?
If I was the tutor, I would copy/paste my common replies to each student's post. Or I would make my own new topic, and say "The answer to..." Or, another thing that I do is to say "See this post that I made to another student" and I would make "see this post" be a hyperlink to the exact post that I made.
Might it be possible for your tutor to provide the answer before students make their own topics, which would eliminate every student making a new topic?