465023 vTiger Project Management Module Modification

We would like to limit access to different projects by user. 1. We need to be able to assign users to one or more projects in the "Users" section of the Admin panel. 2. We would like to be able to choose users in the "Project Information" section of the project. We would like the code delivered (if possible) as a module or plugin of some sort so that it can be easily upgraded.