Hello,
1. When you enter the menu item link in the right format, the scroll effect will be applied to it.
Example, the “About Us” menu has the link “#section-about” now, please change it to “http://www.zcd.com.au/projects/btta/#section-about” and you will see the easing effect when click to it.
Do the the same with other menu items.
2. Yes, you can make the sticky header always be visible, from onLoad. Please go to the Theme Options > Style and add this CSS code to Custom CSS editor:
.page-template-one-page-php .site-header {
z-index: 999;
top: 0;
}
Regards