You hold or discard to make the highest winning hand from these 5 cards. The decision hand is one of the ten hands you are dealt in this game. When you click on draw, nine additional hands of 5 cards will be dealt.
Each hand uses a separate 52 card deck and each hand contains the cards that were held in the decision hand. You are then dealt the remaining cards to complete the decision hand ending the game. The highest combination is paid out on each hand.