Unfortunately, there’s no such feature, it would require a custom implementation. We recommend using listing or request attributes and limiting them to categories: How to add listing attributes - HivePress Help Center (when editing an attribute from the backend, select the category you need on the right sidebar).
I want to create various quote URLs. For example, Post a Request, Post a Request2, Post a Request3, and so on, with different attributes set for each button.
If this is not possible, could you also help me understand the customization costs?
It seems that there was a confusion, if you mean adding different fields to the listing/request forms depending on the selected category, then it’s possible - you can simply assign custom attributes you create in Listings/Attributes and Requests/Attributes to categories, they will appear and be required only if the corresponding category is selected.