I'm building a database that logs and tracks inbound shipping containers and I'm trying to build a form to add new containers to the main table for display in the summary tab of the dashboard. The issue I'm running into is that whenever I click the "add new" button it opens the form with data from the table pre-filled in the boxes. How do I make it so the form opens blank and when I click the "Save/Update" button to add the new record it adds the record in sequence instead of somewhere in the middle?

It's worth mentioning that there are some 350 records already in the database so finding one that's out of place takes some time.