The best way is through the crate training. You have to be consistant with puppies. Try to come up with a schedule. Each puppy goes in its own crate. When you are ready, take one puppy at a time for a potty break untill they go potty. Or have your hubby go in the front yard with one pup and you with the other in the back or something like that. Then the puppies won't have the chance to play with eachother and you might have more luck with them going potty. Always take treats out with you. Put a word to it such as "potty" and when puppy goes, he/she gets a treat. If you can't be watching one or both puppies, then they should be in their crate. This will allow them to be on their own and not bond with the other puppy too much that they don't forget about people. It is a lot harder with 2 puppies, not impossible, but REALLY hard. You should also take each puppy out alone and work with each puppy on tricks or obedience so that the each puppy will have a bond with people. Puppies can have play time together, but make sure it isn't a bunch or else they'll bond together and forget about you.
So use the crates more, when puppies come out of the crates they go directly outside untill they potty. They also get a treat for going potty. Good luck!