Sword animations for Paragon:Kwang character

Hey, I have downloaded the Paragon:Kwang character on the UE4 market. I retargeted him to the base mannequin and everything works just fine. Now, I want my character to swing his sword when pressing “left mouse button” and to add a hitbox to the sword. Unfortunately, I did not find how to do it on the Internet because the sword is litteraly a part of the character (I did not add it after I created the character). So how to do it and if it’s impossible, how to remove the sword to let me add another one? Thanks for your help!