So a lifebar that is independent/different from the simul one? (If I misinterpreted your question, correct me)
Well the tag mode by default uses the simul lifebar but it can use his own lifebar if is specified in the screenpack.
Spoiler, click to toggle visibiltyAnd
Spoiler, click to toggle visibiltyShould work.
If you are talking about support for 16 player lifebar. (Or any above 2vs2 players)
It still does not work. (Except in turns mode)