Omaha Hi/Lo follows the same rules as regular Omaha, but there is an additional way to win a share of the pot.
The Hi winner is the player with the best poker hand, as in Omaha and Texas Hold’em. But in addition to a Hi winner, there can be a Low winner. The Low hand is a hand with 5
cards below a 9. You can use both the "pocket" cards and the "community" cards to make up a Low hand. However, you must use two pocket cards.
For example, 3, 4, 5, 6 and 8 of any suit would be a Low hand. The lowest Low hand is the Low winner. In case of a Low winner, the pot is split 50/50 between the Low and High winner. In case of multiple Low hands, the Low winner is determined by comparing the highest of the low cards, then the second highest, etc. If the two or more Low hands are equal, the Low pot is split between them.
There may not be a Low winner every hand. Also, one player may have two different hands or the same pocket cards for Hi and for Low, along with any three community cards.