This is only available in Context Web.
You can access your list of datashares by going to the Sharing page. On this screen, you should see the datashares you are sending and receiving. To stop sharing:
Click on the menu button to the right of the datashare you want to stop sending.
On the drop down, click on Delete.
A pop up will appear to confirm the deletion of the datashare. Click on Delete Share to confirm.
