When you lock a user account you prevent that user from signing in to Phocas. You might want to do this if the user no longer works for you but you are not yet ready to delete their user account, as it contains some shared content.
Lock an individual user account
On the user maintenance form > User tab > Permissions section, select the Account locked checkbox.
Unlock an individual user account
On the user maintenance form > User tab > Permissions section, clear the Account locked checkbox.
Lock multiple user accounts in bulk
On the Users page, select the users for whom you want to lock accounts and click More > Lock Account.