1. It is useful to describe each category, so [add a field for category description] and fill it!

I think that this is the category for topics about this instance of Zoho Desk. Make us be sure about it!

I see that topics in a category can be labelled as announcements or sticky posts. I haven't seen that either type of topics can play the role of a description.

I find the list of forums / subcategories helpful.

I've found here no conversation about this, so let's converse about it from now on!

2. I see that there is such a field.

2.1 This category has a so-called description: Zoho

2.2 I see that the category Zoho Desk has a better description.