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

# Define QA Cohort

<Frame caption="">
  <img height="700" src="https://mintcdn.com/retellai/6wkwFDKypdjHQ-22/ai-qa/images/create-cohort.png?fit=max&auto=format&n=6wkwFDKypdjHQ-22&q=85&s=b9bea42f1fd99e208d4ca79ae7eec9d9" alt="advanced_qa.png" data-path="ai-qa/images/create-cohort.png" />
</Frame>

<Steps>
  <Step title="Cohort Name">
    The **Cohort Name** field is where you define a unique identifier for your QA cohort. This name helps you organize and identify different cohorts in your AI QA dashboard.

    * **Best Practice**: Use descriptive names that indicate the purpose or criteria of the cohort (e.g., High-Value Customers Q4, Support Calls - Week 1)
  </Step>

  <Step title="Filter Calls by Agent and Criteria">
    This section allows you to define which calls should be included in your cohort based on multiple filtering criteria.

    **1. Agents**

    The **Agents** dropdown lets you select one or more agents whose calls you want to analyze.

    * **Use Case**: Analyze performance across specific agents, compare agent performance, or focus on a particular agent's calls

    **2. Date Range**

    The **Date Range** fields allow you to specify a time period for the calls you want to include in your cohort.

    * **Start Date**: Required. Sets the beginning of the date range for calls to include in the cohort.
    * **End Date**: Optional. If omitted, the cohort will continuously add new calls that match the other criteria as they occur, creating a dynamic cohort that updates over time.

    **3. Call Duration**

    The **Call Duration** filter lets you include or exclude calls based on their length.

    * **Use Case**:
      * Filter out very short calls (e.g., > 30 seconds) that may not be meaningful
      * Focus on longer calls that require more analysis
      * Identify calls that are too short or too long

    **4. Filter by Post Call Analysis**

    The **Filter by Post Call Analysis** option allows you to add custom filters based on post-call analysis results.
  </Step>

  <Step title="Set Sampling Percentage">
    This section controls how many calls from your filtered set will actually be analyzed, helping you manage analysis volume and costs.

    #### Percentage

    The **Percentage** field determines what percentage of calls matching your filters will be included in the cohort.

    * **Example**: Setting 50% means half of all calls matching your filters will be analyzed

    #### Weekly Max

    The **Weekly Max** field sets a maximum number of calls that can be analyzed per week.

    * **Example**: Setting the Weekly Max to 100 ensures that no more than 100 calls are included in the cohort each week, even if the percentage filter would otherwise allow more.

    <Note>
      The Weekly Max acts as a cap. If your percentage calculation results in fewer calls than the Weekly Max, the percentage takes precedence. If it results in more, the Weekly Max limit applies.
    </Note>
  </Step>

  <Step title="Click Next to Continue">
    After configuring your cohort filters and sampling options, select the **Next** button to proceed.
  </Step>
</Steps>