Just to note, a TL3 and TL4 can recategorise any topic as long as trusted users can edit others is enabled. A TL0/1/2 should only be able to do it on their own topic, and only within their editing period [1]. If you lock the first post using the post wrench then that should also stop the category (and title and tags) from being edited.
I’m not 100% sure I’m following your use case, but I’m glad you found a solution. ![]()
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set by
post edit time limitfor TL0 and TL1 andtl2 post edit time limitfor TL2 and TL3 ↩︎