I'm trying to do a multi cam edit with 5 angles

I’m doing a multicam edit on Premiere (v26.2.2 (Build 3))

I’ve nested the 5 angles, synced the audio and that’s all worked fine - but when I start the multi cam edit, and change the Preview Window view to ‘Show Multi-Camera Preview Monitor’ it isn’t showing the fifth camera angle.

Is there something that I’m missing, or is it only possible to edit 4 camera angles in multi cam?

If it helpes, I’m working on a Mac, rather than a PC.