Avoid function? Please :D

Heya there, i see there is an avoid function in 3vs3 solo q, is there a way to put an avoid list like for dungeons and raid, because when you tag in random heroic dungeon for exemple, there is very often people who left or throw the game, so it's can be nice to imput this function no?

Thanks in advance for your answers ! (:

theoretically you should never be matched for an RDF with players on your "Ignore" list

Patch 3.3.0:
Dungeon Finder:" A Player will not be placed in a group with people on his or her Ignore list."

but I do not know if this works on Warmane.

It does not work like that