Log in to the Jolt web app and navigate to labeling > labels.

Select bulk add.

A modal window will appear. Choose a template from the dropdown menu and select bulk add.
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On the next page, enter the required information for each label or copy and paste information into the columns.

The category column can be double-clicked to view previously created categories. You may also create a new category by entering a new name. Additional rows will be generated as needed.
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Once you are done customizing, click save all to apply changes.

After creating this template, you may edit bulk labels at any time.