Confluence: How to delete a topic under a question?

[Michal Potyrcha]

I'm an admin for a space where users can ask questions. A user creates new question and adds topic. I'm not able to edit topics under these questions later on. Only person who created a question is able to edit the topic under this question. 

We are using our space as a community for users and managing topics by space admins is essential. How this can be achieved. 

[Shannon Davis]

I just asked a similar question.  The answer I got was - if you enable Reputation Based permissions for questions, then anyone with 100+ reputation can change the labels/topics on a Question.