Defending two penalties can be hard to do especially if the other team has the ring in your defensive zone for most of the two penalties.
I suggest the but to but defensive strategy for when the other team has the ring in your defensive zone. Another thing that’s helpful is one of the defence players is getting tired is to call off the forward and put on another defence and once the tired defence comes off put the forward back on.
If possible try and send the ring to the other teams zone, so they have to get the ring from there and make their way all the way back. While the defence can change the forward on the ice should be chasing the ring down and be ready to check as soon as one of the other teams players gets the ring.
When the first penalty is almost over I suggest pulling the forward off and putting a centre on if possible.