Add Bulk Labels to Space Blog Posts

Select Label Manager from Space Tools menu
Click Add Bulk Labels tab from Blog Labels Operation menu and enter the name of the label(s) to be added.
Select Blogs to add labels to Blogs.
For Large Spaces

If a space contains too many blogs, please select "All Blogs in this space will be affected" option.
A confirmation screen will be displayed on the following step. Click next to continue.
After added and process completed a success message will be displayed.

Label Manager for Confluence