Menu Help

Hello,

I have 2 questions about menus for my site (https://prologueprofiles.com) that hopefully you can help me with:

1. I have a “Subjects” drop-down menu near the top. If someone clicks on Subjects (as I often do, even if it’s a drop-down) it goes to my Categories category, but no posts have been labeled as Categories so nothing shows up. My question is there a way for this to redirect to another page on my site instead?

2. Also for the Subjects drop-down menu, if you click on a subject, say Technology, it shows all posts with the Technology category. However I want to just show my episode posts, is there a way to add a filter so that I can filter out posts besides my episodes posts?

Hopefully I made sense here. I would really appreciate your help.

Thanks,
Dan