Add parameters to be defined in the formula

---
title: Add parameters to be defined in the formula
description: Add parameters to be defined in the formula to calculate agent count per hour in a day.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/employee-service-management/workforce-optimization-for-hr/add-formula-parameters-wfo-hr.html
release: australia
product: Workforce Optimization for HR
classification: workforce-optimization-for-hr
topic_type: task
last_updated: "2026-09-10"
reading_time_minutes: 1
breadcrumb: [Configure data collection for Demand Forecast, Setting up Demand Forecast in Workforce Optimization for HR, Configuring Workforce Optimization for HR, Workforce Optimization overview, HR Service Delivery, Employee Service Management]
---

# Add parameters to be defined in the formula

Add parameters to be defined in the formula to calculate agent count per hour in a day.

## Before you begin

Role required: admin

## Procedure

1.  Navigate to **All** > **Workforce Optimization for HR** > **Demand Forecast** > **Formula Parameters**.

2.  In the **Name** field, enter a name for the parameter.

3.  Do one of the following:

    -   If you need to add a value to be calculated for the formula, in the **Value** field, enter a value.
    -   If you want to use the performance analytics score card API or a custom API, select **Advanced**, and add a script.
    The Average Case Work Time and Average Chat Work Time forecast parameters provided by default are examples of how you can use scripts to add the parameters. For a list of parameters provided by default, see [Components installed with Workforce Optimization for HR](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/employee-service-management/workforce-optimization-for-hr/wfo-hr-reference.md).

4.  Click **Submit**.


**Parent Topic:**[Configure data collection for Demand Forecast](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/employee-service-management/workforce-optimization-for-hr/configure-data-collection-df-wfo-hr.md)