---
title: "Changing the volume origin"
canonical: "https://help.vicon.com/space/Tracker39/14057974/Changing%20the%20volume%20origin"
format: markdown
---
You can edit an existing calibration object to change the position of the volume origin.


    **To change the volume origin:**


1. After you have completed the usual calibration and setting volume origin procedures, load the calibration object that you used for calibration. To do this, on the **Objects** tab, click the **Load an Object** button > Macro (inline-media-image)

 and locate the relevant calibration object. The default location is:
  **C:\Users\Public\Documents\Vicon\Tracker3.x\Objects**
2. On the **Objects** tab, click the **Pause** button > Macro (inline-media-image)

.
3. Move the calibration object in either of the following ways:
  - On the **System** tab, click the object and in the **Properties** pane ensure **Show Advanced** is selected, then edit the **Global Position** fields and **Global Rotation** fields as necessary; or
  - Drag the object in the view pane.
4. When you are happy with the position of the calibration object, right-click it and click **Save Object As**. Enter a suitable name, and click **Save**.
5. Click the **Calibrate** tab, and in the **Set Volume Origin** section, select your calibration object from the **L-frame** list.
6. In the **Set Volume Origin** section, click **Start**.
  In the view pane, the cameras move to reflect the new position of the origin.