When a Project is set up it inherits it's Item Manager settings from the Portal such that any change that is made in the Portal settings will be reflected in the Project. If, as an Administrator, you wish to have different settings for a single Project then it is possible to copy the Portal settings to the Project such that changes can be made at that level without affecting any of the other Projects. Select the Settings icon in the left hand pane.
and then select Projects in the Menu list
Select the Project you wish to update and then select Settings from the Menu
You can now select the Manage at Project level option and the Portal settings will be copied to your Project.
Once done you can configure the Settings as you wish for this particular Project.