Stick them in low traffic fridge for 28 days, in original cryovac packaging. Then off to the freezer for me, unless I have one that times out right for a comp, then I cook it that weekend.
You need to know the kill date. As Bruno said though:
Leave in the cryovac
Let it sit in a fridge, preferably one that isn't used for normal everyday things, for 28 days
I personally freeze mine first and then age, but that seems to be just a matter of opinion.
We age ours in a dedicated fridge for 30 days from the kill date then freeze them...average temp is 34-36 degrees. Be sure the cryovac is tight...air is your enemy.