Duration
GSAP easing: you can choose from a wide variety of easings. Learn more about GSAP easings here.
Progress Bar v2 has a fixed position. At this group you can change it's z-index, top and bottom. If you are looking to put the progress at the bottom of the page, remove the top value and set 0px at the bottom control, or any other value you need. Same happens when putting the element at the top of the page.
At this group you can change the size of the progress using the height control and create the progress' gradient using the colors repeater.