How to get direct link to certain questions category?

Hi Ivan,
To get direct link to certain questions category in the DW Q&A plugin. Please do as the following.
Step 1: log in to Dashboard > DW Q&A >  Questions Categories > Add new (Ex: Questions & demo1)
Step 2: Open the Appearance > Menu > Select the categories that you have created at the Step1. Click Add to Menu.
See the screenshot:

Hope this helps!