Personal Conference Crestron Integration

I have a dedicated personal-use conference room that already contains a Crestron control processor, wall-keypads and two touch panels. The space is fully wired; what’s missing is a clean, reliable program that ties everything together... (Budget: $30 - $250 USD, Jobs: Automation, Crestron, Programming, Software Development, Software Engineering, Technical Documentation, Technical Support, User Interface / IA)