Hey, I’m new to using Discourse, and I have a question. Is it possible that after creating a category, e.g., “Announcements,” the subcategories within it are displayed directly when entering it?
Hello @szogun 
You can achieve this in the category settings. Ensure that the box in the image below is checked. Then choose a ‘subcategory list style’ of your liking.
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And one more question, is there any way to get around this An error occurred: You can’t nest a subcategory under another
That is, you have Category - subcategory- again subcategory
There is a a way around that - its a hidden site setting you can enable if you are self hosted. If you are a Discourse customer please contact team@discourse.org. Note that the max value is 3.
max_category_nesting
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