Open your return and search for foreign income (upper right corner).
Click Jump to foreign income in the search results.
Continue through the foreign income section, answering questions as you go, until you reach the screen Do you want to try and exclude your foreign earned income?
Answer Yes (to add a 2555 or 2555-EZ – we'll figure out which one you need) or No (to remove it), click Continue, and follow any on-screen instructions.