---
title: "Attaching a conditional function to an addition heading"
slug: "how-do-i-attach-a-conditional-function-to-an-addition-heading"
description: "Once created, attach a conditional numeric function to an addition heading in Cintra iQ, so it derives the rate or amount automatically."
updated: 2026-07-29T09:34:05Z
published: 2026-06-10T11:24:59Z
canonical: "help.cintra.co.uk/how-do-i-attach-a-conditional-function-to-an-addition-heading"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.cintra.co.uk/llms.txt
> Use this file to discover all available pages before exploring further.

# Attaching a conditional function to an addition heading

**Cintra iQ** controls automation of rates generated at employee level, by reference to other payment values, by using conditional numeric functions. A conditional numeric function is where a numeric function is applied to a set of records determined by a condition.

> [!NOTE]
> **Note:** For example, you can base overtime rates on the salary by a multiplication factor in the numeric function. The numeric expression can be different for different sets of records determined by the condition.

Once you have created the **Numeric Function**, you can attach it to an **Addition Heading**.

## To attach a conditional function

1. Navigate to the **Addition Headings** definition window. Go to **Cintra iQ**: Payroll > Payroll Setup > Adjustments > Addition Headings.
2. Open the desired addition heading you wish to attach the conditional function to.
3. Perform either of the following depending on the **Addition Type**.
  - Select the **Rates derived by Conditional Function** option and select the desired **Conditional Function** from the drop down list.
  - Select **Amounts derived by Conditional Function** option and select the function from the drop-down list.
4. Continue to fill out the **Addition Heading** form.
5. Click the **OK** button. The **Addition Heading** is updated. You can now reuse the **Addition Heading** when creating a new expression.