How to export an object that is linked to my mannequin from 3ds Max to Unreal Engine 4

Hi, I’m new to this and hopefully this question is has an easy answer. In 3ds max I have an animation of a mannequin that stands by a table, picks up a box, walks to a wall and hangs it up. That’s it. The problem I’m having is exporting this into Unreal Engine 4. The mannequin and animation works perfectly in Unreal. But I am having a tough time trying to figure out how to bring the box into it. The box is only a mesh and gets linked to the mannequin’s hand at a specific key frame and released at the end to be linked to the world at the end location. Any clue’s? Tutorials? or something that can help this out? Please help me if possible. Thanks