I am new to xamarin forms and I am trying to make a contact app. I want to have a list of departments and when a department is selected, it navigates to a list of employees within that department. From there when a specific employee is selected it navigates to a details page about that employee. What would be the best day to do this and the best way to store and retrieve the data, etc. I have a working app with just a list of employees that navigates to details and it is pulling from a json url but I can't figure out how to implement the department part of it using this method. I have attached a sketch of what I am wanting to do so it can be visualized. Thank you!