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The documentation provides you what you are looking for, if you look at Using the Open Interface Table there is a column for BATCH_NAME - Used to filter the data
"Provide a value for the batch name. The batch name is used by the system as a filter on the open interface table. This enables multiple users to load data into a single interface table but then segregate the data by the batch name."
So you can filter by loading the data you require to the interface table defined by a batch name, alternatively you can also look at Customizing ODI to Load Data from a Custom Source
For calendars have a read of Defining Period Mappings