Hello Milennia Maria,
You are amazing, you made it really awesome. I have an idea for this, please follow that steps and link that on the individual columnist.
1. Create 4 Category, each one for 1 columnist. Example: If you have Author Apple create a category Apple and link that category page on
that columnist.
2. If the Apple columnist, create a post, assign that post on the Apple category. If the visitor click on the Apple columnist, it will directed to that category page.
3. Follow the same process for other columnist as well.
Hope, you understand.
Regards,
Acme Supports