Your client wants you to build three new audiences based on their current digital assets.

You are only able to build similar audiences based on the following seed audiences:

1. Facebook Fan Page

2. Custom Audiences: email databases, customer databases, interactions with the fan page, website visitors with pixel and interactions with lead ads. 

Keep in mind that you are NOT able to build similar audiences using core/saved audiences on Facebook. 

Similar audiences need to be built from users who have interacted in some way with one of your digital assets (Fan Page, Mobile App, Website, CRM and so on); whereas, core/saved audiences are used to find users based on demographics, interests, behaviors, and other variables who have NOT interacted with one of your digital assets.