Timbra in-room brings live transcripts directly into the room. With the in-room display and companion, you’ll be able to display real-time translated transcripts that keep attendees engaged, whether they’re hard of hearing, in a noisy space, or following along in a second language.
Select Create new project and Live stream from HLS/RTMP/SRT. Choose either the RTMP or SRT option. Now pick In-room/webinar.

You’ll need to stream audio to Timbra. There are many options to do this: stream to Timbra using SRT/RTMP.
For what to prepare at an event, see Setting up in a venue.