Where do I see which affiliates have Custom Conditions?

How to Find Affiliates with Custom Conditions in Your Advertiser Account

From your advertiser account -> go to Marketers > My Marketers. There, you will see the list of affiliates accepted into your affiliate program. On this page, just below the affiliate's name, you will see the text Custom Conditions.

If you are looking to modify them, you can use the option of Edit custom conditions. This is an option that be accessed from the same page from 3 points button.