“According to several poskim,….”
I always thought htis was a pashtus. Does anyone argue ?
(There are varying opinions as to where they have to be do all 10 have to start together, if some started already and others join in is that a tzibur, before atah kadosh after etc)
But does anyone say six mispallim (and 4 others present ) counts as tefillah betzibur?