There are a couple of ways you can add topics to a question:
- When adding a new question, one of the steps is topic selection. As you go through the process, Quora will suggest topics to add to the question. You can select from these, as well as search for and add other topics.
- Once a question is added to Quora, you can add topics by going to the question's page, and selecting the "..." menu located under the question text and selecting "Edit Topics" from the drop-down list.