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To enable this feature, the specific feature flag must be set in the configuration file, see https://digizuite.atlassian.net/wiki/spaces/DD/pages/31771204393972006817/MM5MM+6.61+Feature+flags#Feature-flags .
In addition to setting the feature flag, open the Media Manager and select ‘Brand Portals’ from the top right settings menusite and navigate to Administration → Brand Portals. Then click the button ‘Enable portal styles.’
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