Data stored in Files can be added to one, or multiple Datasets with ease.
  1. Navigate to the folder containing the data you want to add to multiple Datasets.
  2. Select the data you want to add to the Datasets.
To add multiple files to a Dataset, bulk-select files by selecting the first file, and then selecting the last file while holding the Shift key on your keyboard.
  1. Right-click your selection and select Add to dataset. A dialog appears.
  2. Add data to a Dataset by clicking Add next to a Dataset’s name. Add data to multiple Datasets by clicking Add next to each Dataset you want to add the data to.
You cannot add data to mirrored Datasets.