How to hide the unassigned project

[testing]

Hello,

1)we have created an mantis account for an user as reporter/updater and assigning the project for that user...In that user account if we login, it should display that assigned project details only..rather it displays all the projects and its details ..How should we hide the unassigned project from that user..

2)And also in projects dropdown only the assigned project should display..how to do that..

please reply as soon as possible..awaiting for the reply...

Thanks and regards,

Ani