How do I add credits for a team in a specific filming location?

You can only add the credits in the 

usual categories and include the unit in the occupation:

• Where a job title is modified in some way, the modification should be separated with a colon. This is common for locations and units; for example, "location manager: New York" or "assistant: Mr. Smith" or "script supervisor: second unit". If there is more than one modifier, they should be separated by commas: assistant: Mr. Smith, Los Angeles. Omit the word "unit" in connection with a place ("Paris" rather than "Paris unit"). (from Additional crew)