AngularJS: Default Views for Multiple State UI-Routing

Question:
How to set default page with multiple views with parent-child routing? Refer to the current vs expected output.

Current display
Expected display

Answer:
Just refer to the code below and amend/insert it into your respective file(s).
HTML file (index.html)
JS file (app.js)
HTML file (menu-dashboard.html)

Reference:
StackOverflow