please add a" Mark all as read" button next to the "ALL SITE STORIES" tab

Could you add a “Mark all as read” button next to the “ALL SITE STORIES” tab? That way, after reviewing “all site stories”, and looking at the ones I want, I can wipe the slate clean with one button click.

Right now, I have to go under the menu, move the slider back from 1 day for mark everything as read…multiple clicks for the same result