Upon clicking on Book button on Requirement, schedule assistant gets loaded and maps the "Available duration" on the filter panel from duration on the requirement. So when full booking or partial booking is made via Schedule Assistant and "Book button clicked" the bottom panel refreshes and correctly shows updated "Remaining duration" and fulfilled duration" whereas the scheduling assistant filter at the top doesn’t refresh Dynamically considering any booking/partial booking being made therefore sticks to original “Available duration” hence risk of over booking against the resources.

It'll be great if the filter panel also refreshes and therefore updates "Available duration" once a booking is made via "Book" button on Schedule assistant.