I'm unfamiliar with D&D rules but I equipped this thinking that I could use it on the off-hand like you can in other games but you can't. Why would I use it as my secondary ranged weapon when even a longbow does more damage, and by the time you find one, Heavy Crossbows are becoming ubiquitous. I'm simply curious, as to how these work in the setting.
Its not fully implemented yet but you should be able to wield one in each hand eventually. You used to be able to but it was bugged so they took that ability out until they can put it in correctly. What class/race are you using to wield it?
Just to clarify, its meant to be conceptually cool - like you are a gunslinger...with crossbows. There is a piratish vibe to it I guess.
Sorry to further Clarify, you need the Crossbow Expert Feat as well so you can fire the second one as a bonus action. Which is not in game yet.