This solution will guide you through collaboration and task setting inside Box.

To collaborate on a call recording inside Box, go the Call Recording folder and open the sub-folder where the call recording is located (or use Box’s Search Feature to locate a call recording) 

2 Next to each call recording, there should be a speech bubble icon. You can press on the icon or the call recording directly; either option will open up the call recording in its own page.

3 You can add comments in the Comment box, as well as mention fellow collaborators specifically using the '@' feature.

 4 Using the drop-down menu on the right, you can choose to create a task instead. You can then specify an assignee, due date and instructions.