> ## Documentation Index
> Fetch the complete documentation index at: https://docs.altheahealth.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Campaign schedule time window

# Time Window Scheduling

Time window scheduling allows calls to be placed only during configured hours.

Fields:

* Start time
* End time
* Days of week
* Time zone

Useful for:

* Respecting patient time zones
* Limiting calls to business hours
* Avoiding early morning or late-night calls