Specifying availability for each day of the week instead of ALL weekdays?

Why does Rover not have the simple functionality of allowing sitters to specify the hours that they are available on each day of the week? For example, as of now, Rover asks "What times are you available for Dog Walking on weekdays?" and all we can do is check the boxes next to "6am-11am," "11am-3pm," and/or "3pm-10pm." What if I am available from 6am-11am on Mondays, Wednesdays, and Fridays but not Tuesdays and Thursdays? What if I am available all day on Saturday but not on Sunday? I've emailed Rover about this before and I really just don't understand why they don't include this simple, common-sense functionality on their website or app.