We've made changes to how you can create schedules for Profiles. To create a scheduled pause for a profile, select the gear icon in the upper right corner of the profile page. From there, select "Create a Schedule" next to Downtime, or select the "Get Started" below Downtime.
You can then select and icon and give the schedule a name. Proceeding to the next screen you can specify the days for the schedule as well as the start and end time.
You can find more information on Downtime here.