Disappointed as well. This worked great in my Quest 2 but now I upgraded
to Quest 3 and there's no way to set it up in the new headset. This
feature was already working fine. Why remove it?
I too am frustrated by this. It seems that this wasn't properly thought
through. My son can literally play with strangers but there's no way for
us to friend each other so we can play Beat Saber together. I know that
Meta only just added this feature...