> ## 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.

# Concepts

# Core Concepts

Before building with Voice Agents, familiarize yourself with the following components:

## Patients

Individual records with demographic, contact, and metadata fields.

## Cohorts

Grouped sets of patients used for targeting outbound campaigns.

<img src="https://mintlify.s3.us-west-1.amazonaws.com/altheahealth/getting-started/images/cohort-list.png" alt="cohort list" />

## Workflows

The step-by-step conversational logic your agent follows.

## Campaigns

An outbound calling job targeting a cohort with a specific workflow and schedule.

## Schedules

Rules that determine when calls happen:

* ASAP
* Time windows
* Quiet hours
* Event-driven triggers

## Agent Settings

Controls how the AI behaves:

* Model
* Voice
* Speed
* Interruption behavior
* Authentication
* Prompting instructions