Disabling screen time on Macbook while keeping it on iPhone

I have tried everything I can think of and can not figure out a way to use Screen time on my daughers phone but disable it for her Macbook. She uses the Macbook for school and I constantly have to approve requests for school related stuff like Google Classroom and random websites she needs. Since there doesn't appear to be a way of whitelisting websites on screen time I would like to turn off screen time on her Macbook and while keeping it on her iPhone.

Any help would be greatly appreciated.