Hide an Essential Field in Vantagepoint
To prevent unexpected results, Deltek recommends that if you want to hide an essential field from a security role, hide the tab on which the field is displayed, instead of directly hiding the field itself.
When you hide a tab, all the fields on the tab are hidden and the non-essential fields are secured, but the essential fields on the tab are not secured. This allows Vantagepoint to work properly when users who belong to the role use other Vantagepoint applications that require the essential field on the hidden tab. When you directly hide an essential field (not the tab), the essential field is hidden and secured, so unexpected results can possibly occur.
For more information, see:
To hide an essential field by hiding the tab on which the field is displayed, see Hide a Tab in Vantagepoint or Set Up Access to Application Tabs.
To safely hide an essential field if you do not want to hide the tab that the field is on because you do not want to hide other fields on the tab from the role: