You can easily disable the auto fit option in the Proforma Invoice in Moon Invoice by following the steps below.

1. Open the Moon Invoice application on your device or tap on this link.
2. Navigate to Settings ➜ App Settings.
3. In the Proforma Invoice section, under Columns ➜ Auto Fit, toggle it off as needed.
4. Finally, click Save to apply the changes.

Note: You can use the Auto Fit option for the other modules as well.