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You can also set the privacy of a corporate matter or a litigation case from the Privacy section in the General Information of the matter.
In addition, all matters can be set to private by default by the administrator.
This can be done from the System Settings → Setup & Configuration. Click on the default values tab and set "Matter private by default" to "yes".
Privacy can be set also at the level of the folder. You just need to click near to the folder → "share with"
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