Garmin Fenix 5 PLUS : how to turn off bluetooth?

The manual says I should be able to turn off bluetooth on the 5 PLUS from the light button control menu. But there is no such icon there.

https://www8.garmin.com/manuals/webhelp/fenix5plus/EN-US/GUID-139CD52F-B25F-4002-B13D-ACF7FEA70A04.html

I trawled all through the settings and couldn't find it. Can someone advise please.