You can learn to set up a Data source here. After setting up a data source, you can assign that data source to your client.
Go to Clients under your Account Settings and then click ‘Edit’
From the drop-down list, you will find all the existing data sources you have in your studio. The data sources that have a green dot are the ones ready to be connected. Then click ‘Save’.
After selecting a data source, you will see two check boxes available:
Keep imported products and samples updated
Add additional samples when updating: When updating from data source, additional samples that are not already added to the system will be added as additional samples.