External User in Prime

I want to set up 3 customers as external users in Captivate Prime, However, I want to restrict what each customer can see in the course catalogue. For example, I don't want the customers to see or have access to any of our internal catalogue. Also I want to tailor specific courses to each of the 3 individual customers. Can you tell me if this is possible in Prime and if so is there any documentation or Tutorials on how to do this.

Thanks

Sean