To add a VOYCE interpreter capabilities to a Twilio Programmable Video telemedicine waiting room and video chat app, you need to generate a Twilio video token for a VOYCE interpreter, set up a basic front end user interface for the VOYCE service, build an integration with the VOYCE service related core APIs. You also need to create a thread to pull status information about the service just sent and implement functions including joining the room, setting up a callback for a participant joining and leaving the video room, hide leave/join buttons, mute/unmute and pause/resume button UI. Additionally, you can add VOYCE API calls from the server to invite an interpreter functionality, check interpreter session status, close an interpreter session. The sample code provides a basic implementation of adding a translation service to a Twilio Programmable Video telehealth app using VOYCE and Twilio Programmable Video.