Bulk edit article properties
Click on Bulk Edit Article Properties
Locate the articles by selecting the manual > chapter you want to make a bulk edit to, and click Bulk Edit.
The Bulk Edit interface will appear on the left side of the articles column. On the left you will add properties that you would like to change (1). On the right you select the articles that you want to modify (2).
Check the box next to the articles you want to modify. Clicking the box at the top of the checkbox column will select all articles.
Add properties to change and apply
Click on the Change Properties button to select a property to change. You will be presented with an interface for changing that specific property.
Each time you add a property to change it will appear in a list (1). The list will show you all properties that will be changed when you click Apply Changes (2).