To delete a work order history, to the following:

1. Click on the Work Order in the main navigation and then choose 'Work Order Histories' from the padding menu. A screen with histories will appear.

2. Select the history you want to delete by checking the box besides, and then click 'Delete' button.

You may also choose to open the work order history you want to delete by clicking on its title and then clicking 'Delete' button.