Datasets can be uploaded to the hub by any user with the right to upload datasets. From then on, these datasets will be available to this user and any other user they choose to grant the rights to view or edit the sets. 

To open a folder or dataset, double-click on it.  To add a dataset, click the “Add” button on the upper-left of the user interface (UI) and select "Upload dataset".

You can either Drop files directly from the windows file system or click Add Files or Add Folders on the upper left.  You can give the dataset a new name or simply derive the name from the original filename.  Select a destination folder and then click "Start Upload".  Once a dataset has been uploaded, you can right-click on it for options such as Move and Delete.