Thank you very much for your assistance. However, I am still confused about how to allow users to rename the titles of their own discussions at any time, while restricting them from renaming the titles of discussions created by other users. Currently, users are able to rename the titles of any discussion, regardless of whether or not they were the original creator. I think this is where the problem lies, and I'm not sure if I have communicated my issue clearly enough.
I can try to explain it more clearly. If I only grant "Rename Discussions" permission in the "Moderator" to the admin, then only the admin can modify the titles of discussions. Now, I want all users to be able to modify titles, so I granted this permission to all registered users. However, for some unknown reason, they can not only modify the titles of their own discussions but also those of other users' discussions, which is strange. My ideal permission settings are:
- the admin can modify the titles of all discussions (if not possible, the admin can only modify the titles of its own discussions is also ok for me)
- regular users can only modify the titles of their own discussions
But the current situation is that regular registered users either cannot change titles at all or, after being granted permission, can change the titles of all discussions (not just their own).