Only one video in broadcasts to YouTube during screen sharing

[Erionline]

We usually use Zoom Meeting for broadcasts to YouTube. Our broadcasts include sign language interpreters, which makes it essential that, in addition to the presenter, the interpreter remains visible throughout the presentation. However, when screen sharing occurs, although it is possible to pin two videos simultaneously in Zoom, the same does not happen when the image is broadcast to YouTube, resulting in the display of only one video to viewers. Is this a limitation of Zoom, or is there a solution?