# Column Locks

**YouTube:** [How to Lock and Unlock Columns in a Sales Bill in LOGIC ERP?](https://www.youtube.com/watch?v=N4HJSxnx8b0)

## How to Lock and Unlock Columns in a Sales Bill in LOGIC ERP?

 This tutorial provides a step-by-step guide on how to **lock and unlock columns** in a sales bill based on user requirements. Locked columns will **not appear** in the sale voucher, while unlocked columns will be displayed.

**Steps to Lock or Unlock Columns**

* Navigate to **Sale Voucher Configuration** and choose the Relevant **Sales Bill Series**.
* Locate the **Column Locks option** under the **Other Settings-1.**
* Columns with a **blue tick** are locked and will not appear in the sale voucher.
* Locate the column you want to unlock (e.g., **Agent Broker**).
* **Unselect** the checkbox to unlock it.

<figure><img src="/files/yHW17rXukcLFKCGaUcUC" alt=""><figcaption></figcaption></figure>

* **Save the changes**.

### **Impliment in Sales Bill**

* Open a **new sales bill** to apply the changes.
* The **Agent Broker column** is now visible in the sales bill.

<figure><img src="/files/QNJUURf9yjCT8ZylY0vy" alt=""><figcaption></figcaption></figure>

This feature allows businesses to customize the sales bill layout, ensuring relevant columns are displayed as needed.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://kb.logicerp.com/logic-erp-learning-hub-tutorials-and-best-practices/setups/configurations/sale-voucher-configuration/other-settings-1/column-locks.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.