Blocking a ball must start with the blocker being a FRONT ROW PLAYER during that rally first.
Then we proceed with that player making contact with a ball coming from the opponent’s side of the net, preferably an “attacked” ball, but not necessarily. That blocker’s contact of the ball must be made with some part of the BLOCKER’S body above the top of the net. The ball, as we know can contact any part of the blocker’s body during that play and with multiple contacts, which would still qualify it as a block. When that action is over, the blocker can then play the ball on his/her side or over the net being his/her teams FIRST HIT.
Multiple contacts is a different animal than successive contacts! If the blocking action has been completed, then move to the First Hit.