There's two possible interpretations here. One is that Dell wanted to use stay at home as a filter for promoting people that believe in it, the other is that D

There's two possible interpretations here. One is that Dell wanted to use stay at home as a filter for promoting people that believe in it, the other is that Dell was using promotion as a stick (as in carrot and stick) to get people to come into the office. We can't really say which of these they're doing, but my vote would be the former.