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As a system administrator you have the option to force the users to use categories by making them mandatory for all MultiExcerpt Assets throughout the system.
In order to make categories mandatory go to: Confluence settings (administration backend) - ADMINISTRATION ASSET MANAGEMENT - Configure categories:
Click on the “Make categories mandatory” checkbox
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Categories are now mandatory systemwide.
2. Go to a confluence page and add a MultiExcerpt Asset
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You now have to choose a category in order to be able to save and publish your MultiExcerrpt content Asset.