This article will show you how to utilize the category Bulk Actions. This allows you to modify multiple categories all at one time.
There are multiple Bulk Actions:
Publish: Makes categories publicly viewable
Unpublish: Makes the categories drafts, not viewable by the public
Delete: Removes categories from the system
Archive: Moves the category into the archives
Decline: Decline an author-submitted category
Who can use this feature?
System Administrator | Owner | Publisher
Instructions
Navigate to Modules, then Content, and then Form Center:

Expand Bulk Actions:

View the options:

Publish: Makes categories publicly viewable
Unpublish: Makes the categories drafts, which are not viewable by the public
Delete: Removes categories from the system
Archive: Moves the category into the archives
Decline: Decline an author-submitted category
Select the categories you wish to apply your desired Bulk Action(s) to

Note:
Click the checkbox next to All Categories to select all the calendar categories.

Select your Bulk Actions option:

Notes:
If you delete, you must click OK on the pop-up that says Are you sure you want to delete the categories? Only unpublished categories with no items will be deleted:

If you archive, you must click OK on the pop-up that says “Are you sure you want to archive the selected categories?” Please note that only published categories with no items will be archived. Archiving is a permanent action! You will not be able to edit, publish, unpublish, submit, reject, or move these categories out of the archive:
