One-time start
Set ascheduled_start_time and timezone to have the campaign start automatically at a specific date and time, instead of starting it manually.
Recurring working hours
Set working hours and a timezone to restrict the campaign to a recurring daily calling window.A campaign automatically pauses outside its configured working hours and resumes at the start of the next window — if a campaign looks stalled, check whether it’s simply outside its working hours before assuming something is wrong.