OCHEM allows to combine experimental records into reusable sets. Such sets of records are referred to as baskets. Baskets have names and user can virtually have as many baskets as required. Baskets are typically used as training or validation sets for the development of QSAR models.
The easiest way to create a basket is to select some records in the compound property browser select some records, click on "add selected records to basket" icon 
in the command panel:
Afterwards, select one of your baskets where you would like to add your record to or, alternatively, choose "Create a new set":
Another way to create a basket is the Batch data upload facility. For each set of data that is batch uploaded, a new basket is created automatically.