# 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="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2F3fjAAYaxE8RRkorhbo8s%2FUn-Select%20Agent%20column.png?alt=media&#x26;token=74701cb8-345e-47ce-98d3-7e8fa10c725e" 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="https://4031188996-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXMVkjt8zqHBQX1c9QvFS%2Fuploads%2FR6xdW1adTxLYF17XyX6H%2FSale%20Bill.png?alt=media&#x26;token=c893faec-8458-4886-ab58-021cc0c76fa3" alt=""><figcaption></figcaption></figure>

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