You should be able to print/encode as many cards as you would like in the exact same job.
Having a dynamic design/script, linked to a database, you can use any of the following record selection settings, available under the File > Print menu:
Range: Allows printing from the starting, current or last record, all records simultaneously or a custom record selection (for example: 1, 3, 5-7)
Conditional print: Defines a database condition that will decide what records can be printed.
Selected Records in browse view: Prints only the records that were previously selected on the Database Table view.