DroplistFor and checkboxFor in asp.net mvc form?

Hi Team

 

I want someone who can show me how to call these two on View, have an understanding on the model side(checkboxFor). My interest is on both when i called them on a View. I have two models on my View which makes it difficult for me to call these models. Please team show me how to call these two on a View, especially if your View has more than two models and are mandatory for form validation.