Hiding fields in an Activity Guide

Hello,

My client is insisting they remember being able to hide/display only not just Steps, but individuals fields on those steps in an Activity Guide. I can easily delete the entire step by updating the activity guide, and I can make certain pages display only using Permissions Lists, but other than creating a new activity guide or customizing a page, I don't know how that would be possible.

Does anyone have any insight? Thank you!