I'm having some trouble on the concept of saving multiple child for what I need on MVC 5. The entity comes from a currency pair graph on a daily basis that would be the parent. And what I need its to create the parent, lets say Euro/Dollar and then assign important levels that can be one, two, or ten. So I know I could create the parent and then in other step create the childs but its not very "friendly" as it has to be done for lots of currency pairs and everyday. I wonder if theres a way to do this all in a single page. I don't know if I'm being clear with what I want, but as a concept I think it is like adding tags to a blog, you create the "blog article" and add tags all at same page but you don't know how many tags the article will have. 

This are my models

```
public class Pair
{
    public int pairID { get; set; }
    public string name { get; set; }
    public DateTime Date { get; set; }
    public virtual IEnumerable<Levels> Levels { get; set; }
}

public class Levels
{
    public int levelID { get; set; }
    public double Value { get; set; }
    public string comment { get; set; }
    public int pairID { get; set; }
    public virtual Pair Pair { get; set; }
}

```