Redmine

Is there currently any way to have 'private users' within Redmine?

By this I mean there could be a user assigned to a project who works as eg a developer, but that developer's name not be visible to an external customer. The users name would not appear in the pull down 'assign to' list for the external customer, and a mask could be set by the administrator to show something other than the users name to external users 'eg project developer'.

The users name would not appear in the list of project members to anyone who does not have access to the 'private users' option.

Any internal user would still be able to see the users name as is the case now.

Many thanks - Steve