Where do I see which affiliates have Custom Conditions?

How to Find Affiliates with Custom Conditions in Your Advertiser Account

In your advertiser account, go to Marketers->My marketers section. There you will see a list of all your accepted affiliates. On this listing page, under their name you will find 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.