77985 phpcollab Modification

I been using phpcollab([login to view URL]) for project management. I need to modify to fit my need. Currently a developer can see all projects even those projects which are not assigned. I want to make sure that a developer/designer dont see other projects which he is not assigned. Also I dont want my client to see Developer, they will only communicate with Project manager. I think it should be a quick one. Please bid only if you are comfortable with PHP/Mysql and post some example on PMB.