Why hold it at all? Can just do it like the good old days and have teams make their selections without anybody being there but essential personnel. TV stations can still do fancy graphics and roll tape of the prospects, it;s just not going to have all the shenanigans but importantly, also none of the risks for the players and teams involved.
They have more than a month to set this up. There's no way they could not get this whole thing done online in that time frame.
I'm more concerned what the NFL is going to do about a traveling circus of scouts, going past like 100 colleges in 50 states and getting into contact with people all over the place. That's a serious risk right now and with every minute the NFL lets this go on, they are partly responsible for any outbreaks that happen due to this in the NFL community.
The NBA just put their whole season on hiatus and the NFL is doing nothing while putting almost as many people and draftable players at risk. At best that's a bad look.